Registration Statement No. 333-143353

811-09137

As Filed with the Securities and Exchange Commission on October 15, 2009

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-6

REGISTRATION UNDER THE SECURITIES ACT OF 1933              [ X ]

Pre-Effective Amendment No.           [  ]

Post-Effective Amendment No.  11            [ X ]

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940         [ X ]

Amendment No.   81             [ X ]

Sun Life of Canada (U.S.) Variable Account I

Registrant

Sun Life Assurance Company of Canada (U.S.)

Depositor

One Sun Life Executive Park

Wellesley Hills, Massachusetts 02481

Depositor's Address

1-800-700-6554

Depositor's Telephone Number

Sandra DaDalt

Assistant Vice President and Senior Counsel

Sun Life Assurance Company of Canada (U.S.)

One Sun Life Executive Park

Wellesley Hills, Massachusetts 02481

Name and Address of Agent For Service

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

[  ]  immediately upon filing pursuant to paragraph (b) of Rule 485.

[ X ]  on October 28, 2009 pursuant to paragraph (b) of Rule 485.

[  ]  60 days after filing pursuant to paragraph (a)(1) of Rule 485.

[  ]  on October 28, 2009 pursuant to paragraph (a)(1) of Rule 485.

[  ]  This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

PART A

This Amendment No. 11 to the Registration Statement on Form N-6 (the "Registration Statement") (File Nos. 333-143353, 811-09137) is being filed pursuant to Rule 485(b) under the Securities Act of 1933, as amended, in order to add a supplement to the prospectus filed with Post-Effective Amendment No. 6 to the Registration Statement, which was filed on April 30, 2009. This Amendment does not otherwise delete, amend, or supersede any prospectus, statement of additional information, exhibit, or other information contained in Post-Effective Amendment Nos. 6 and 9 to the Registration Statement.

SUPPLEMENT DATED OCTOBER 28, 2009

TO PROSPECTUS DATED MAY 1, 2009

FOR SUN EXECUTIVE VARIABLE UNIVERSAL LIFE INSURANCE

ISSUED BY SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

SUN LIFE OF CANADA (U.S.) VARIABLE ACCOUNT I

For all Policyholders, the following investment programs are available.  The Company reserves the right to terminate these programs at any time.

Dollar Cost Averaging.  You may select, at no extra charge, a dollar cost averaging program by allocating a minimum of $5,000 to the Sun Capital Money Market Fund®.  Each month or quarter, a level amount will be transferred automatically, at no cost, to one or more Variable Sub-Accounts chosen by You, up to a maximum of twelve.  The program continues until your Account Value allocated to the program is depleted or You elect to stop the program.

The main objective of a dollar cost averaging program is to minimize the impact of short-term price fluctuations.  Since the same dollar amount is transferred to other available Variable Sub-Accounts at set intervals, dollar cost averaging allows You to purchase more Units (and, indirectly, more Fund shares) when prices are low and fewer Units (and, indirectly, fewer Fund shares) when prices are high.  Therefore, a lower average cost per Unit may be achieved over the long-term.  A dollar cost averaging program allows You to take advantage of market fluctuations.  However, it is important to understand that a dollar cost averaging program does not assure a profit or protect against loss in a declining market.

Asset Rebalancing.  Once your money has been allocated among the Sub-Accounts, the earnings may cause the percentage invested in each Sub-Account to differ from your allocation instructions.  You can direct us to automatically rebalance the Policy among your Sub-Accounts to return to your allocation percentages by selecting our asset rebalancing program.  The rebalancing will be on a calendar quarter, semi-annual or annual basis, depending on your instructions.  Rebalancing will not occur if the total Sub-Account allocations are less than $1,000.

There is no charge for asset rebalancing.  In addition, rebalancing will not be counted against any limit we may place on your number of transfers in a Policy Year.  You may not select dollar cost averaging and asset rebalancing at the same time.  We reserve the right to waive the $1,000 minimum amount for asset rebalancing.

THIS SUPPLEMENT SHOULD BE READ AND RETAINED FOR FUTURE REFERENCE.

PART B

The Statement of Additional Information is incorporated herein by reference to Post-Effective Amendment No. 6 to the Registration Statement for Sun Life of Canada (U.S.) Variable Account I, File No. 333-143353, filed with the Securities and Exchange Commission on April 30, 2009.

PART C

ITEM 26.  EXHIBITS

A. Resolution of the Board of Directors of Sun Life Assurance Company of Canada (U.S.), dated October 29, 1998, authorizing the establishment of Sun Life of Canada (U.S.) Variable Account I (Incorporated herein by reference to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form S-6, File No. 333-68601, filed with the Securities and Exchange Commission on December 9, 1998.)

B. None.

C. (1) Principal Underwriting Agreement (Incorporated herein by reference to Post-Effective Amendment No. 11 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-100829, filed with the Securities and Exchange Commission on April 30, 2009.)

(2) Amendment One to the Principal Underwriting Agreement (Incorporated herein by reference to Post-Effective Amendment No. 11 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-100829, filed with the Securities and Exchange Commission on April 30, 2009.)

D. (1)  Flexible Premium Combination Fixed and Variable Life Insurance Policy  (Incorporated by reference to Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on May 30, 2007.)

(2)  Charitable Giving Benefit Rider (Incorporated herein by reference to Pre-Effective Amendment No. 2 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on September 19, 2007.)

(3)  Payment of Stipulated Amount Rider (Incorporated herein by reference to Pre-Effective Amendment No. 1 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form S-6, File No. 333-68601, filed with the Securities and Exchange Commission on April 27, 1999.)

(4)  Waiver of Monthly Deductions Rider (Incorporated herein by reference to Pre-Effective Amendment No. 2 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on September 19, 2007.)

(5)  Travel Assistance Endorsement (Incorporated herein by reference to Pre-Effective Amendment No. 2 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on September 19, 2007.)

(6)  Loan Lapse Protection Rider (Incorporated herein by reference to Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-144628, filed with the Securities and Exchange Commission on July 17, 2007.)

(7)  Scheduled Increases Endorsement. (Incorporated herein by reference to Post-Effective Amendment No. 7 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on May 20, 2009.)

E. (1)  Application for Flexible Premium Combination Fixed and Variable Life Insurance Policy (Incorporated by reference to Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on May 30, 2007.)

(2)  Application for Flexible Premium Combination Fixed and Variable Life Insurance Policy   (Incorporated by reference to Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on May 30, 2007.)

(3)   Application for Flexible Premium Combination Fixed and Variable Life Insurance Policy

(Incorporated by reference to Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on May 30, 2007.)

(4)   Application for Flexible Premium Combination Fixed and Variable Life Insurance Policy

(Incorporated by reference to Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on May 30, 2007.)

(5)   Consent Form  (Incorporated by reference to Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on May 30, 2007.)

(6)  Scheduled Increases Application. (Incorporated herein by reference to Post-Effective Amendment No. 7 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on May 20, 2009.)

F. (1)  Certificate of Incorporation of Sun Life Assurance Company of Canada (U.S.) (Incorporated herein by reference to the Depositor's Form 10-K, File No. 333-82824, filed with the Securities and Exchange Commission on March 29, 2004.)

(2)  Bylaws of the Depositor, as amended March 19, 2004 (Incorporated herein by reference to the Depositor's Form 10-K, File No. 333-82824, filed with the Securities and Exchange Commission on March 29, 2004.)

G. Specimen Reinsurance Contract.  (Incorporated herein by reference to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, File No. 333-100829, filed with the Securities and Exchange Commission on October 30, 2002.)

H.           (1)      Participation Agreement, dated February 17, 1998, by and among AIM Variable Insurance Funds, Inc., AIM Distributors, Inc., Sun Life Assurance Company of Canada (U.S.), and Clarendon Insurance Agency, Inc. (Incorporated herein by reference to Post-Effective Amendment No. 1 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account F on Form N-4, Exhibit 8d, File No. 333-82957, filed with the Securities and Exchange Commission on February 3, 2000.)

(2)      Amended and Restated Participation Agreement, dated December 13, 2004, by and among Sun Capital Advisers Trust, Sun Capital Advisers, Inc., Sun Life Insurance and Annuity Company of New York and Sun Life Assurance Company of Canada (U.S.) (Incorporated herein by reference to Post-Effective Amendment No. 8 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account F on Form N-4, Exhibit 8e, File No. 333-83516, filed with the Securities and Exchange Commission on April 29, 2005.)

(3)      Amended and Restated Participation Agreement, dated September 1, 2004, by and among Sun Life Assurance Company of Canada (U.S.), Variable Insurance Products Fund and Fidelity Distributors Corporation (Incorporated herein by reference to Post-Effective Amendment No. 8 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account F on Form N-4, Exhibit 8g, File No. 333-83516, filed with the Securities and Exchange Commission on April 28, 2005.)

(4)      Participation Agreement, dated May 1, 2001, by and among Sun Life Assurance Company of Canada (U.S.), Clarendon Insurance Agency, Inc., Alliance Capital Management L.P. and Alliance Fund Distributors, Inc. (Incorporated herein by reference to Post-Effective Amendment No. 10 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account F on Form N-4, Exhibit 8k, File No. 333-82957, filed with the Securities and Exchange Commission on April 23, 2004.)

(5)      Participation Agreement, dated September 16, 2002, by and among the Franklin Templeton Variable Insurance Products Trust, Franklin Templeton Distributors, Inc., Sun Life Insurance and Annuity Company of New York and Sun Life Assurance Company of Canada (U.S.) (Incorporated herein by reference to the Registration Statement of KBL Variable Account A on Form N-4, Exhibit 8g, File No. 333-102278, filed with the Securities and Exchange Commission on December 31, 2002.)

(6)      Participation Agreement, dated February 17, 1998, by and among Goldman Sachs Variable Insurance Trust, Goldman, Sachs & Co., and Sun Life Assurance Company of Canada (U.S.) (Incorporated herein by reference to Post-Effective Amendment No. 13 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account F on Form N-4, Exhibit 8b, File No. 033-41628, filed with the Securities and Exchange Commission on April 26, 1999.)

(7)     Amended and Restated Participation Agreement, dated November 6, 2002, by and among MFS/Sun Life Series Trust, Sun Life Insurance and Annuity Company of New York, Sun Life Assurance Company of Canada (U.S.), and Massachusetts Financial Services Company (Incorporated herein by reference to Post-Effective Amendment No. 3 to the Registration Statement of Sun Life (N.Y.) Variable Account C on Form N-4, Exhibit 8a, File No. 333-107983, filed with the Securities and Exchange Commission on May 28, 2004.)

(8)      Participation Agreement, dated July 15, 2002, by and among Sun Life Assurance Company of Canada (U.S.), Deutsche Asset Management VIT Funds and Deutsche Asset Management, Inc. (Incorporated herein by reference to Post-Effective Amendment No. 2 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account G on Form S-6, Exhibit 8o, File No. 333-65048, filed with the Securities and Exchange Commission on July 3, 2002.)

(9) Participation Agreement, dated September 30, 2002, by and among Sun Life Assurance Company of Canada (U.S.), Sun Life Insurance and Annuity Company of New York, First Eagle Sogen Variable Funds, Inc. and Arnhold and S. Bleichroeder, Inc. (Incorporated herein by reference to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, Exhibit H9, File No. 333-143353, filed with the Securities and Exchange Commission on May 30, 2007.)

(10) Participation Agreement, dated September 12, 2002, by and among Sun Life Assurance Company of Canada (U.S.), Sun Life Insurance and Annuity Company of New York, PIMCO Variable Insurance Trust and PIMCO Funds Distributors LLC. (Incorporated herein by reference to Post-Effective Amendment No. 3 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, Exhibit H10, File No. 333-59662, filed with the Securities and Exchange Commission on February 26, 2003.)

(11)    Participation Agreement, dated December 1, 2004, by and among Wanger Advisors Trust, Columbia Funds Distributor, Inc., Sun Life Assurance Company of Canada (U.S.) and Sun Life Insurance and Annuity Company of New York.  (Incorporated herein by reference to the Registration Statement of Sun Life (N.Y.) Variable Account J on Form N-6, Exhibit H20, File No. 333-136435, filed with the Securities and Exchange Commission on August 9, 2006.)

(12)    Participation Agreement, dated May 1, 2004, by and among Sun Life Assurance Company of Canada (U.S.), The Universal Institutional Funds, Inc., Morgan Stanley & Co. Incorporated and Morgan Stanley Investment Management Inc. (Incorporated herein by reference to Post-Effective Amendment 5 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account G on Form N-6, File No. 333-111688, filed with the Securities and Exchange Commission on April 27, 2007.)

(13)                 Participation Agreement, dated August 6, 2004, by and among Sun Life Insurance and Annuity Company of New York, Van Kampen Life Investments Trust, Van Kampen Funds Inc., Van Kampen Asset Management. (Incorporated herein by reference to Post-Effective Amendment No. 4 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, Exhibit H16, File No. 333-100831, filed with the Securities and Exchange Commission on April 29, 2005.)

(14) Participation Agreement, dated December 31, 2002, by and among Oppenheimer Variable Account Funds, OppenheimerFunds, Inc. and Sun Life Assurance Company of Canada (U.S.) (Incorporated herein by reference to Post-Effective Amendment No. 4 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, Exhibit H17, File No. 333-100831, filed with the Securities and Exchange Commission on April 29, 2005.)

(15)   Restated Participation Agreement, dated April 1, 2007, by and among Sun Life Assurance Company of Canada (U.S.), Sun Life Insurance and Annuity Company of New York, Independence Life and Annuity Company, Columbia Funds Variable Insurance Trust I, Columbia Management Advisors, LLC and Columbia Management Distributors, Inc. (Incorporated herein by reference to the Registration Statement of Sun Life of Canada (U.S.) Variable Account I on Form N-6, Exhibit H15, File No. 333-143353, filed with the Securities and Exchange Commission on May 30, 2007.)

(16)   Participation Agreement, dated May 13, 2004, by and among Sun Life Assurance Company of Canada (U.S.), Merrill Lynch Variable Series Funds, Inc., Merrill Lynch Investment Managers, L.P. and FAM Distributors, Inc. (Incorporated herein by reference to Post-Effective Amendment No. 2 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account G on Form N-6, File No. 333-111688, filed with the Securities and Exchange Commission on December 30, 2005.)

(17) Participation Agreement, dated October 1, 2008, by and among Sun Life Assurance Company of Canada (U.S.), Sun Life Insurance and Annuity Company of New York, American Funds Insurance Series and Capital Research and Management Company.  (Incorporated by reference to the Registration Statement of Sun Life of Canada (U.S.) Variable Account G on Form N-6, File No. 111688, filed with the Securities and Exchange Commission on September 22, 2008.)

I. Third Party Administration Agreement between Andesa TPA, Inc. and Sun Life Assurance Company of Canada. (Incorporated herein by reference to Post-Effective Amendment No. 4 to the Registration Statement of Sun Life of Canada (U.S.) Variable Account G on Form N-6, File No. 333-65048, filed with the Securities and Exchange Commission on October 1, 2002.)

J.           (1) Powers of Attorney. (Incorporated herein by reference to Post-Effective Amendment No. 6 to the Registration Statement on Form N-6, File No. 333-143353, filed with the Securities and Exchange Commission on April 30, 2009.)

(2) Resolution of the Board of Directors of the Depositor dated March 26, 2008, authorizing the use of Powers of Attorney for Officer signatures. (Incorporated herein by reference to Post-Effective Amendment No. 32 to the Registration Statement on Form N-4, File No. 333-83516, filed with the Securities and Exchange Commission on February 27, 2009.)

K.           Legal Opinion.

L.           None.

M.           None.

N.           Consent of Independent Registered Public Accounting Firm.

O.           None.

P.           None.

Q.           None.

ITEM 27.  DIRECTORS AND OFFICERS OF THE DEPOSITOR

Name and Principal Business Address Positions and Offices With Depositor

Jon A. Boscia Sun Life Assurance Company of Canada 150 King Street West Toronto, ON M5H 1J9	Director and Chairman
Ronald H. Friesen Sun Life Assurance Company of Canada (U.S.) One Sun Life Executive Park Wellesley Hills, MA 02481	Director and Senior Vice President and Chief Financial Officer and Treasurer
Scott M. Davis Sun Life Assurance Company of Canada (U.S.) One Sun Life Executive Park Wellesley Hills, MA 02481	Director and Senior Vice President and General Counsel
Stephen L. Deschenes Sun Life Assurance Company of Canada One Sun Life Executive Park Wellesley Hills, MA 02481	Director and Senior Vice President and General Manager, Annuities
Janet V. Whitehouse Sun Life Assurance Company of Canada (U.S.) One Sun Life Executive Park Wellesley Hills, MA 02481	Senior Vice President and General Manager, Individual Life Insurance
Westley V. Thompson Sun Life Assurance Company of Canada (U.S.) One Sun Life Executive Park Wellesley Hills, MA 02481	Director and President, SLF U.S.
Priscilla S. Brown Sun Life Assurance Company of Canada (U.S.) One Sun Life Executive Park Wellesley Hills, MA 02481	Senior Vice President and Head of U.S. Marketing
Keith Gubbay Sun Life Assurance Company of Canada  (U.S.) One Sun Life Executive Park Wellesley Hills, MA 02481	Senior Vice President and Chief Actuary
Michael S. Bloom Sun Life Assurance Company of Canada (U.S.) One Sun Life Executive Park Wellesley Hills, MA 02481	Assistant Vice President and Senior Counsel and Secretary
Sean N. Woodroffe Sun Life Assurance Company of Canada (U.S.) One Sun Life Executive Park Wellesley Hills, MA 02481	Vice President, Human Resources
John R. Wright Sun Life Assurance Company of Canada (U.S.) One Sun Life Executive Park Wellesley Hills, MA 02481	Executive Vice President, Sun Life Financial U.S. Operations
Terrence J. Mullen Sun Life Assurance Company of Canada (U.S.) One Sun Life Executive Park Wellesley Hills, MA 02481	Director

ITEM 28.  PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH THE DEPOSITOR OR THE REGISTRANT

No person is directly or indirectly controlled by the Registrant.  The Registrant is a separate account of Sun Life Assurance Company of Canada (U.S.), which is ultimately controlled by Sun Life Financial.

The organization chart of Sun Life Financial is incorporated by reference to Post-Effective Amendment No. 32 to the Registration Statement on Form N-4, File No. 333-83516, filed February 27, 2009.

None of the companies listed in such organization chart is a subsidiary of the Registrant; therefore, the only financial statements being filed are those of Sun Life Assurance Company of Canada (U.S.).

ITEM 29.  INDEMNIFICATION

Pursuant to Section 145 of the Delaware Corporation Law, Article 8 of the By-laws of Sun Life Assurance Company of Canada (U.S.) provides for the indemnification of directors, officers and employees of Sun Life Assurance Company of Canada (U.S.).  Insofar as indemnification for liability arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of Sun Life Assurance Company of Canada (U.S.) pursuant to the certificate of incorporation, by-laws, or otherwise, Sun Life (U.S.) has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable.  In the event that a claim for indemnification against such liabilities (other than the payment by Sun Life (U.S.) of expenses incurred or paid by a director, officer, controlling person of Sun Life (U.S.) in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, Sun Life (U.S.) will submit to a court of appropriate jurisdiction the question whether such indemnification by them is against public policy as expressed in the Act, unless in the opinion of their counsel the matter has been settled by controlling precedent, and will be governed by the final adjudication of such issue.

ITEM 30.  PRINCIPAL UNDERWRITERS

(a) Clarendon Insurance Agency, Inc., which is a wholly-owned subsidiary of Sun Life Assurance Company of Canada (U.S.), acts as general distributor for the Registrant, Sun Life of Canada (U.S.) Variable Accounts C, D, E, F, G and K, Keyport Variable Account A, KMA Variable Account, Keyport Variable Account I, KBL Variable Account A, KBL Variable Annuity Account, Sun Life (N.Y.) Variable Accounts A, B, C, D, J and N, and Money Market Variable Account, High Yield Variable Account, Capital Appreciation Variable Account, Government Securities Variable Account, World Governments Variable Account and Total Return Variable Account.

(b)

Name and Principal	Position and Offices
Business Address*	with Underwriter
Terrence J. Mullen	President and Director
Scott M. Davis	Director
Ronald H. Friesen	Director
Ann B. Teixeira	Assistant Vice President, Compliance
Michael S. Bloom	Secretary
Kathleen T. Baron	Chief Compliance Officer
William T. Evers	Assistant Vice President and Senior Counsel
Jane F. Jette	Financial/Operations Principal and Treasurer
Alyssa M. Gair	Assistant Secretary
Michelle D’Albero	Counsel
Matthew S. MacMillen	Tax Officer

* The principal business address of all directors and officers of the principal underwriter is One Sun Life Executive Park, Wellesley Hills, Massachusetts 02481.

(c)  Inapplicable.

ITEM 31.  LOCATION OF ACCOUNTS AND RECORDS

Accounts, books and other documents required to be maintained by Section 31(a) of the Investment Company Act of 1940 and the Rules promulgated thereunder are maintained, in whole or in part, by Sun Life Assurance Company of Canada (U.S.) at its offices at One Sun Life Executive Park, Wellesley Hills, Massachusetts 02481 or at the offices of Clarendon Insurance Agency, Inc., at One Sun Life Executive Park, Wellesley Hills, Massachusetts 02481.

ITEM 32.  MANAGEMENT SERVICES

Not applicable.

ITEM 33.  FEE REPRESENTATION

Sun Life Assurance Company of Canada (U.S.)("Sun Life of Canada (U.S.)") hereby represents that the aggregate fees and charges under the Policy are reasonable in relation to the services rendered, the expenses expected to be incurred, and the risks assumed by Sun Life (U.S.).

SIGNATURES

As required by the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements of Securities Act Rule 485(b) for effectiveness of this Post-Effective Amendment to the Registration Statement and has duly caused this Post-Effective Amendment to the Registration Statement to be signed on its behalf, in the Town of Wellesley Hills, and Commonwealth of Massachusetts on this 15th day of October, 2009.

SUN LIFE OF CANADA (U.S.) VARIABLE ACCOUNT I

(Registrant)

SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

(Depositor)

By: _/s/ Westley V. Thompson*_______________

Westley V. Thompson

President, SLF U.S.

Attest:	__/s/ Sandra M. DaDalt__________________
	Sandra M. DaDalt
	Assistant Vice President & Senior Counsel
Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities with the Depositor, Sun Life Assurance Company of Canada (U.S.),  and on the dates indicated.

SIGNATURE	TITLE	DATE
/s/ Westley V. Thompson*	Director and President, SLF U.S.	October 15, 2009
Westley V. Thompson	(Principal Executive Officer)
/s/ Ronald H. Friesen*	Director and Senior Vice President and	October 15, 2009
Ronald H. Friesen	Chief Financial Officer and Treasurer
	(Principal Financial Officer)
/s/ Douglas C. Miller*	Vice President and Controller	October 15, 2009
Douglas C. Miller	(Principal Accounting Officer)

*By: /s/ Sandra M. DaDalt	Attorney-in-Fact for:	October 15, 2009
Sandra M. DaDalt
	Terrence J. Mullen, Director
	Scott M. Davis, Director
	Jon A. Boscia, Director

*Sandra M. DaDalt has signed this document on the indicated date on behalf of the above Directors and Officers for the Depositor pursuant to powers or attorney duly executed by such persons and a resolution of the Board of Directors authorizing use of powers of attorney for Officer signatures.  Resolution of the Board of Directors is incorporated herein by reference to Post-Effective Amendment No. 32 to the Registration Statement on Form N-4, File No. 333-83516, filed on February 27, 2009.

EXHIBIT INDEX

K	Legal Opinion
N	Consent of Independent Registered Public Accounting Firm
	Representation of Counsel Pursuant to Rule 485(b)