485BPOS

1933 Act File No. 002-64536
1940 Act File No. 811-02924

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-1A
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933		x
	Pre-Effective Amendment No.	o
	Post-Effective Amendment No. 44	x
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT		x
OF 1940
Amendment No. 44		x
LORD ABBETT U.S. GOVERNMENT & GOVERNMENT SPONSORED ENTERPRISES MONEY MARKET FUND, INC.
(Exact Name of Registrant as Specified in Charter)

90 Hudson Street, Jersey City, New Jersey	07302-3973
(Address of Principal Executive Office)	(Zip Code)
Registrant’s Telephone Number, including Area Code: (800) 201-6984

Thomas R. Phillips, Esq.

Vice President and Assistant Secretary

90 Hudson Street, Jersey City, New Jersey 07302-3973

(Name and Address of Agent for Service)

It is proposed that this filing will become effective (check appropriate box)

x immediately upon filing pursuant to paragraph (b)

o on (date) pursuant to paragraph (b)

o 60 days after filing pursuant to paragraph (a) (1)

o on (date) pursuant to paragraph (a) (1)

o 75 days after filing pursuant to paragraph (a) (2)

o on (date) pursuant to paragraph (a) (2) of Rule 485.

If appropriate, check the following box:

o this post-effective amendment designates a new effective date for a previously filed post-effective amendment.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness to its Registration Statement under Rule 485(b) under the Securities Act and had duly caused this Post-Effective Amendment to its Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Jersey City, and State of New Jersey as of the 20^th day of November, 2012.

LORD ABBETT U.S. GOVERNMENT & GOVERNMENT SPONSORED ENTERPRISES MONEY MARKET FUND, INC.
BY:	/s/ Thomas R. Phillips
	Thomas R. Phillips
	Vice President and Assistant Secretary
BY:	/s/ Joan A. Binstock
	Joan A. Binstock
	Chief Financial Officer and Vice President

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

Signatures	Title	Date
	Chairman, Chief Executive
Robert S. Dow *	Officer and Director	November 20, 2012
Robert S. Dow
Daria L. Foster*	President and	November 20, 2012
	Director
Daria L. Foster
E. Thayer Bigelow*	Director	November 20, 2012
E. Thayer Bigelow
Robert B. Calhoun, Jr.*	Director	November 20, 2012
Robert B. Calhoun, Jr.
Evelyn E. Guernsey*	Director	November 20, 2012
Evelyn E. Guernsey
Julie A. Hill*	Director	November 20, 2012
Julie A. Hill
Franklin W. Hobbs*	Director	November 20, 2012
Franklin W. Hobbs
Thomas J. Neff*	Director	November 20, 2012
Thomas J. Neff
James L.L. Tullis*	Director	November 20, 2012
James L.L. Tullis

By	/s/ Thomas R. Phillips
	Thomas R. Phillips
	Attorney – in – Fact*

POWER OF ATTORNEY

          Each person whose signature appears below on this Registration Statement hereby constitutes and appoints Lawrence H. Kaplan, Lawrence B. Stoller, John K. Forst and Thomas R. Phillips, each of them, with full power to act without the other, his or her true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities (until revoked in writing) to sign any and all Registration Statements of each Fund enumerated on Exhibit A hereto for which such person serves as a Director/Trustee (including Registration Statements on Forms N-1A and N-14 and any amendments thereto), and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing ratifying and confirming all that said attorneys-in-fact and agents or any of them, or their or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

          Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

Signatures	Title	Date
/s/ Robert S. Dow	Chairman, CEO	April 19, 2012
	and Director/Trustee
Robert S. Dow
/s/ Daria L. Foster	President and	April 19, 2012
	Director/Trustee
Daria L. Foster
/s/ E. Thayer Bigelow	Director/Trustee	April 19, 2012
E. Thayer Bigelow
/s/ Robert B. Calhoun, Jr.	Director/Trustee	April 19, 2012
Robert B. Calhoun, Jr.
/s/ Evelyn E. Guernsey	Director/Trustee	April 19, 2012
Evelyn E. Guernsey
/s/ Julie A. Hill	Director/Trustee	April 19, 2012
Julie A. Hill
/s/ Franklin W. Hobbs	Director/Trustee	April 19, 2012
Franklin W. Hobbs
/s/ Thomas J. Neff	Director/Trustee	April 19, 2012
Thomas J. Neff
/s/ James L .L. Tullis	Director/Trustee	April 19, 2012
James L. L. Tullis

EXHIBIT A

Lord Abbett Affiliated Fund, Inc.

Lord Abbett Bond-Debenture Fund, Inc.

Lord Abbett Developing Growth Fund, Inc.

Lord Abbett Equity Trust

Lord Abbett Global Fund, Inc.

Lord Abbett Investment Trust

Lord Abbett Mid Cap Stock Fund, Inc.

Lord Abbett Municipal Income Fund, Inc.

Lord Abbett Research Fund, Inc.

Lord Abbett Securities Trust

Lord Abbett Series Fund, Inc.

Lord Abbett Stock Appreciation Fund

Lord Abbett U.S. Government & Government Sponsored Enterprises Money Market Fund, Inc.

EXHIBIT INDEX

Exhibit No.	Description
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

LORD ABBETT US GOV & GOV SPONSORED ENTERPR MONEY MARKET FUND

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The investment objective of the Fund is to seek high current income and preservation of capital through investments in high quality, short-term, liquid securities. These securities are commonly known as money market instruments.

Expense [Heading]

rr_ExpenseHeading

FEES AND EXPENSES

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (Fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year, that dividends and distributions are reinvested, and that the Fund’s operating expenses remain the same. The example assumes a deduction of the applicable contingent deferred sales charge (“CDSC”) for the one-year, three-year, and five-year periods for Class B shares.

However, the example does not reflect a deduction of the applicable CDSC for the one-year period for Class A and Class C shares obtained through exchange from another Lord Abbett Fund. Class B shares automatically convert to Class A shares after approximately eight years. The expense example for Class B shares for the ten-year period reflects the conversion to Class A shares. The first example assumes that you redeem all of your shares at the end of the periods. Although your actual costs may be higher or lower, based on these assumptions, your costs (including any applicable CDSC) would be as shown below. The second example assumes that you do not redeem and instead keep your shares.

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

If Shares Are Redeemed

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

If Shares Are Not Redeemed

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund is a money market fund that attempts to manage its portfolio to maintain a stable share price of $1.00 in accordance with strict rules of the Securities and Exchange Commission (“SEC”). To pursue its objective, under normal conditions, the Fund invests substantially all of its assets in:

• U.S. government securities, which include securities issued or guaranteed by the U.S. government or its agencies, or by various instrumentalities that have been established or sponsored by the U.S. government (collectively, “government-sponsored enterprises”); and

• Repurchase agreements that are collateralized by the securities described above.

To maintain liquidity, the Fund will normally maintain at least 10% of its total assets in a combination of (i) direct obligations of the U.S. Government, (ii) securities that will mature or are subject to a demand feature that is exercisable and payable within one business day, and (iii) cash. The Fund may hold cash to meet this requirement or while looking for suitable investment opportunities. The Fund will maintain a dollar-weighted average portfolio maturity of 60 calendar days or less.

The Fund seeks to remain fully invested in accordance with its investment objective. In response to adverse economic, market or other unfavorable conditions, however, the Fund may invest its assets in cash or cash equivalents in a temporary defensive manner. The Fund may also increase its investments in cash or cash equivalents in unusual circumstances, such as unusually large cash inflows (whether through the purchase of Fund shares or the sale of securities) or anticipated increase in redemptions, or to satisfy other liquidity requirements.

The Fund generally will sell a security to satisfy redemption requests or increase cash or for a variety of other reasons, such as when the Fund believes the security seems less likely to benefit from the current market and economic environment, shows signs of deteriorating fundamentals, or when selling the security would help manage the Fund’s duration.

Risk [Heading]

rr_RiskHeading

PRINCIPAL RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with any investment in a mutual fund, investing in the Fund involves risk. While the Fund seeks to preserve capital by investing in high quality, short-term, liquid securities, the value of such securities will fluctuate in response to economic conditions and market movements.

In addition to the risks of overall market movements and risks that are specific to an individual security, the principal risks of investing in the Fund, which could adversely affect its performance, include:

• Interest Rate Risk: A rise in prevailing interest rates generally will cause the price of a fixed rate debt security to fall. Generally, the longer the maturity of a security or weighted average maturity of the Fund, the more sensitive its price is to a rise in interest rates. The Fund’s yield may vary in response to changes in interest rates and other market factors. During periods when the Fund holds low-yielding securities, the Fund may have little or no net investment income and the Fund’s yield may decline substantially.

• Credit Risk: Many securities in which the Fund invests are not supported by the full faith and credit of the U.S. Government, even though they are issued by government-sponsored enterprises. There can be no assurance that the U.S. government will provide financial support to government-sponsored enterprises if it is not legally required to do so. In these situations, the Fund is exposed to the credit risk of the issuing government-sponsored enterprise, which may fail to make timely payments of principal or interest, or may default on such payments.

• Mortgage-Related Securities Risk: Mortgage-related debt securities issued by government-sponsored enterprises may be particularly sensitive to changes in economic conditions, including delinquencies and/or defaults. They are subject to prepayment risk (higher than expected prepayment rates of mortgage obligations, due to a fall in market interest rates) and extension risk (lower than expected prepayment rates of mortgage obligations, due to a rise in market interest rates). These risks increase the Fund’s overall interest rate risk.

• Issuer Concentration Risk: Because the Fund may invest most of its assets in securities issued or guaranteed by a small number of government-sponsored enterprises that are not backed by the full faith and credit of the U.S. Government, it may be more exposed to developments affecting an individual government- sponsored enterprise than a fund that invests more widely.

• Repurchase Agreement Risk: If the other party to a repurchase agreement defaults on its obligation under the agreement, the Fund may suffer delays and incur costs or lose money in exercising its rights under the agreement. If the seller fails to repurchase the security and the market value of the security declines, the Fund may lose money.

• Portfolio Management Risk: If the strategies used by the Fund’s portfolio managers and their security selections fail to produce the intended result, the Fund may suffer losses or underperform other funds with the same investment objective or strategies, even in a favorable market.

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Fund. The Fund is not a complete investment program and may not be appropriate for all investors. For more information on the principal risks of the Fund, please see the “More Information About the Fund – Principal Risks” section in the prospectus.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any investment in a mutual fund, investing in the Fund involves risk. While the Fund seeks to preserve capital by investing in high quality, short-term, liquid securities, the value of such securities will fluctuate in response to economic conditions and market movements.

Risk Money Market Fund [Text]

rr_RiskMoneyMarketFund

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Fund. The Fund is not a complete investment program and may not be appropriate for all investors.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risks of investing in the Fund by illustrating the variability of the Fund’s returns. Each assumes reinvestment of dividends and distributions. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risks of investing in the Fund by illustrating the variability of the Fund's returns.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

888-522-2388

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.lordabbett.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past performance is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Bar Chart (per calendar year) - Class A Shares*

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

The bar chart shows changes in the performance of the Fund's Class A shares from calendar year to calendar year. Performance for the Fund's other share classes will vary due to the different expenses each class bears. Updated performance information is available at www.lordabbett.com or by calling 888-522-2388.

Bar Chart Footnotes [Text Block]

rr_BarChartFootnotesTextBlock

* The year-to-date return for Class A shares as of September 30, 2012 was 0.02%.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter 3rd Q ’06 +1.16% Worst Quarter 1st Q ‘11 0.00%

Year to Date Return, Label

rr_YearToDateReturnLabel

The year-to-date return for Class A shares as of September 30, 2012 was 0.02%.

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

0.02%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2006

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

1.16%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

0.00%

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2011)

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

The Fund's average annual total returns for Class A and C shares are shown at net asset value ("NAV") because there are no sales charges applicable to these share classes other than in certain cases where shares were obtained through exchange from another Lord Abbett Fund. The Fund's average annual total returns for Class B shares include the current CDSC of 5.00% for the one-year period and 2.00% for the five-year period.

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses, or taxes)

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

For the Fund’s current 7-day yield, call toll-free 888-522-2388. The table below shows the Fund’s Class A, B, C, and I shares performance over time. The Fund’s average annual total returns for Class A and C shares are shown at net asset value (“NAV”) because there are no sales charges applicable to these share classes other than in certain cases where shares were obtained through exchange from another Lord Abbett Fund. The Fund’s average annual total returns for Class B shares include the current CDSC of 5.00% for the one-year period and 2.00% for the five-year period. Class B shares automatically convert to Class A shares at approximately eight years after purchase. All returns for Class B shares for periods greater than eight years reflect this conversion.

Money Market Seven Day Yield, Caption [Text]

rr_MoneyMarketSevenDayYieldCaption

For the Fund’s current 7-day yield, call toll-free 888-522-2388.

Money Market Seven Day Yield Phone

rr_MoneyMarketSevenDayYieldPhone

888-522-2388

Lipper U.S. Government Money Market Fund Average(reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.01%

5 Years

rr_AverageAnnualReturnYear05

1.22%

10 Years

rr_AverageAnnualReturnYear10

1.50%

Life of Class

rr_AverageAnnualReturnSinceInception

1.81%

Inception Date for Performance

rr_AverageAnnualReturnInceptionDate

Oct. 31, 2004

^[1]

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

0.45%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.66%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

67

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

211

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

368

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

822

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

67

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

211

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

368

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

822

Annual Return 2002

rr_AnnualReturn2002

0.85%

Annual Return 2003

rr_AnnualReturn2003

0.26%

Annual Return 2004

rr_AnnualReturn2004

0.48%

Annual Return 2005

rr_AnnualReturn2005

2.48%

Annual Return 2006

rr_AnnualReturn2006

4.35%

Annual Return 2007

rr_AnnualReturn2007

4.50%

Annual Return 2008

rr_AnnualReturn2008

1.62%

Annual Return 2009

rr_AnnualReturn2009

0.02%

Annual Return 2010

rr_AnnualReturn2010

0.02%

Annual Return 2011

rr_AnnualReturn2011

0.02%

1 Year

rr_AverageAnnualReturnYear01

0.02%

5 Years

rr_AverageAnnualReturnYear05

1.22%

10 Years

rr_AverageAnnualReturnYear10

1.45%

Class B

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

5.00%

Management Fees

rr_ManagementFeesOverAssets

0.45%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.75%

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.41%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

644

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

746

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

971

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,486

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

144

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

446

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

771

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,486

1 Year

rr_AverageAnnualReturnYear01

(5.00%)

5 Years

rr_AverageAnnualReturnYear05

0.53%

10 Years

rr_AverageAnnualReturnYear10

1.06%

Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

0.45%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.66%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

67

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

211

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

368

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

822

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

67

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

211

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

368

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

822

1 Year

rr_AverageAnnualReturnYear01

0.02%

5 Years

rr_AverageAnnualReturnYear05

1.22%

10 Years

rr_AverageAnnualReturnYear10

1.45%

Class I

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.45%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.66%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

67

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

211

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

368

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

822

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

67

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

211

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

368

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

822

1 Year

rr_AverageAnnualReturnYear01

0.02%

5 Years

rr_AverageAnnualReturnYear05

1.22%

Life of Class

rr_AverageAnnualReturnSinceInception

1.82%

Inception Date for Performance

rr_AverageAnnualReturnInceptionDate

Oct. 19, 2004

[1] Corresponds with Class I period shown.

[2] Class A or Class C shares of the Fund that were obtained in exchange for Class A or Class C shares of another Lord Abbett Fund that were subject to a contingent deferred sales charge ("CDSC") of 1.00% at the time of exchange are subject to a CDSC unless the one-year CDSC period has expired or a CDSC waiver applies.

XML

LORD ABBETT US GOV & GOV SPONSORED ENTERPR MONEY MARKET FUND

LORD ABBETT US GOV & GOV SPONSORED ENTERPR MONEY MARKET FUND

INVESTMENT OBJECTIVE

The investment objective of the Fund is to seek high current income and preservation of capital through investments in high quality, short-term, liquid securities. These securities are commonly known as money market instruments.

FEES AND EXPENSES

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (Fees paid directly from your investment)

Shareholder Fees LORD ABBETT US GOV & GOV SPONSORED ENTERPR MONEY MARKET FUND	Class A		Class B	Class C		Class I
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	none		none	none		none
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)	none	[1]	5.00%	none	[1]	none

Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)

Operating Expenses LORD ABBETT US GOV & GOV SPONSORED ENTERPR MONEY MARKET FUND	Class A	Class B	Class C	Class I
Management Fees	0.45%	0.45%	0.45%	0.45%
Distribution and Service (12b-1) Fees	none	0.75%	none	none
Other Expenses	0.21%	0.21%	0.21%	0.21%
Total Annual Fund Operating Expenses	0.66%	1.41%	0.66%	0.66%

Example

The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year, that dividends and distributions are reinvested, and that the Fund’s operating expenses remain the same. The example assumes a deduction of the applicable contingent deferred sales charge (“CDSC”) for the one-year, three-year, and five-year periods for Class B shares.

However, the example does not reflect a deduction of the applicable CDSC for the one-year period for Class A and Class C shares obtained through exchange from another Lord Abbett Fund. Class B shares automatically convert to Class A shares after approximately eight years. The expense example for Class B shares for the ten-year period reflects the conversion to Class A shares. The first example assumes that you redeem all of your shares at the end of the periods. Although your actual costs may be higher or lower, based on these assumptions, your costs (including any applicable CDSC) would be as shown below. The second example assumes that you do not redeem and instead keep your shares.

If Shares Are Redeemed

Expense Example LORD ABBETT US GOV & GOV SPONSORED ENTERPR MONEY MARKET FUND (USD $)	1 Year	3 Years	5 Years	10 Years
Class A	67	211	368	822
Class B	644	746	971	1,486
Class C	67	211	368	822
Class I	67	211	368	822

If Shares Are Not Redeemed

Expense Example No Redemption LORD ABBETT US GOV & GOV SPONSORED ENTERPR MONEY MARKET FUND (USD $)	1 Year	3 Years	5 Years	10 Years
Class A	67	211	368	822
Class B	144	446	771	1,486
Class C	67	211	368	822
Class I	67	211	368	822

PRINCIPAL INVESTMENT STRATEGIES

The Fund is a money market fund that attempts to manage its portfolio to maintain a stable share price of $1.00 in accordance with strict rules of the Securities and Exchange Commission (“SEC”). To pursue its objective, under normal conditions, the Fund invests substantially all of its assets in:

• U.S. government securities, which include securities issued or guaranteed by the U.S. government or its agencies, or by various instrumentalities that have been established or sponsored by the U.S. government (collectively, “government-sponsored enterprises”); and

• Repurchase agreements that are collateralized by the securities described above.

To maintain liquidity, the Fund will normally maintain at least 10% of its total assets in a combination of (i) direct obligations of the U.S. Government, (ii) securities that will mature or are subject to a demand feature that is exercisable and payable within one business day, and (iii) cash. The Fund may hold cash to meet this requirement or while looking for suitable investment opportunities. The Fund will maintain a dollar-weighted average portfolio maturity of 60 calendar days or less.

The Fund seeks to remain fully invested in accordance with its investment objective. In response to adverse economic, market or other unfavorable conditions, however, the Fund may invest its assets in cash or cash equivalents in a temporary defensive manner. The Fund may also increase its investments in cash or cash equivalents in unusual circumstances, such as unusually large cash inflows (whether through the purchase of Fund shares or the sale of securities) or anticipated increase in redemptions, or to satisfy other liquidity requirements.

The Fund generally will sell a security to satisfy redemption requests or increase cash or for a variety of other reasons, such as when the Fund believes the security seems less likely to benefit from the current market and economic environment, shows signs of deteriorating fundamentals, or when selling the security would help manage the Fund’s duration.

PRINCIPAL RISKS

As with any investment in a mutual fund, investing in the Fund involves risk. While the Fund seeks to preserve capital by investing in high quality, short-term, liquid securities, the value of such securities will fluctuate in response to economic conditions and market movements.

In addition to the risks of overall market movements and risks that are specific to an individual security, the principal risks of investing in the Fund, which could adversely affect its performance, include:

• Interest Rate Risk: A rise in prevailing interest rates generally will cause the price of a fixed rate debt security to fall. Generally, the longer the maturity of a security or weighted average maturity of the Fund, the more sensitive its price is to a rise in interest rates. The Fund’s yield may vary in response to changes in interest rates and other market factors. During periods when the Fund holds low-yielding securities, the Fund may have little or no net investment income and the Fund’s yield may decline substantially.

• Credit Risk: Many securities in which the Fund invests are not supported by the full faith and credit of the U.S. Government, even though they are issued by government-sponsored enterprises. There can be no assurance that the U.S. government will provide financial support to government-sponsored enterprises if it is not legally required to do so. In these situations, the Fund is exposed to the credit risk of the issuing government-sponsored enterprise, which may fail to make timely payments of principal or interest, or may default on such payments.

• Mortgage-Related Securities Risk: Mortgage-related debt securities issued by government-sponsored enterprises may be particularly sensitive to changes in economic conditions, including delinquencies and/or defaults. They are subject to prepayment risk (higher than expected prepayment rates of mortgage obligations, due to a fall in market interest rates) and extension risk (lower than expected prepayment rates of mortgage obligations, due to a rise in market interest rates). These risks increase the Fund’s overall interest rate risk.

• Issuer Concentration Risk: Because the Fund may invest most of its assets in securities issued or guaranteed by a small number of government-sponsored enterprises that are not backed by the full faith and credit of the U.S. Government, it may be more exposed to developments affecting an individual government- sponsored enterprise than a fund that invests more widely.

• Repurchase Agreement Risk: If the other party to a repurchase agreement defaults on its obligation under the agreement, the Fund may suffer delays and incur costs or lose money in exercising its rights under the agreement. If the seller fails to repurchase the security and the market value of the security declines, the Fund may lose money.

• Portfolio Management Risk: If the strategies used by the Fund’s portfolio managers and their security selections fail to produce the intended result, the Fund may suffer losses or underperform other funds with the same investment objective or strategies, even in a favorable market.

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Fund. The Fund is not a complete investment program and may not be appropriate for all investors. For more information on the principal risks of the Fund, please see the “More Information About the Fund – Principal Risks” section in the prospectus.

PERFORMANCE

The bar chart and table below provide some indication of the risks of investing in the Fund by illustrating the variability of the Fund’s returns. Each assumes reinvestment of dividends and distributions. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.

The bar chart shows changes in the performance of the Fund's Class A shares from calendar year to calendar year. Performance for the Fund's other share classes will vary due to the different expenses each class bears. Updated performance information is available at www.lordabbett.com or by calling 888-522-2388.

Bar Chart (per calendar year) - Class A Shares*

* The year-to-date return for Class A shares as of September 30, 2012 was 0.02%.

Best Quarter 3rd Q ’06 +1.16% Worst Quarter 1st Q ‘11 0.00%

Average Annual Total Returns (for the periods ended December 31, 2011)

For the Fund’s current 7-day yield, call toll-free 888-522-2388. The table below shows the Fund’s Class A, B, C, and I shares performance over time. The Fund’s average annual total returns for Class A and C shares are shown at net asset value (“NAV”) because there are no sales charges applicable to these share classes other than in certain cases where shares were obtained through exchange from another Lord Abbett Fund. The Fund’s average annual total returns for Class B shares include the current CDSC of 5.00% for the one-year period and 2.00% for the five-year period. Class B shares automatically convert to Class A shares at approximately eight years after purchase. All returns for Class B shares for periods greater than eight years reflect this conversion.

Average Annual Returns LORD ABBETT US GOV & GOV SPONSORED ENTERPR MONEY MARKET FUND	1 Year	5 Years	10 Years	Life of Class	Inception Date for Performance
Class A	0.02%	1.22%	1.45%
Class B	(5.00%)	0.53%	1.06%
Class C	0.02%	1.22%	1.45%
Class I	0.02%	1.22%		1.82%	Oct. 19, 2004
Lipper U.S. Government Money Market Fund Average(reflects no deduction for fees, expenses, or taxes)	0.01%	1.22%	1.50%	1.81%	Oct. 31, 2004	[1]

[1] Class A or Class C shares of the Fund that were obtained in exchange for Class A or Class C shares of another Lord Abbett Fund that were subject to a contingent deferred sales charge ("CDSC") of 1.00% at the time of exchange are subject to a CDSC unless the one-year CDSC period has expired or a CDSC waiver applies.

[1] Corresponds with Class I period shown.