Exhibit 99.1

FOR IMMEDIATE RELEASE

Contact:	M. Keith Waddell
	Vice Chairman, President and
	Chief Financial Officer
	(650) 234-6000

ROBERT HALF INTERNATIONAL INC. REPORTS RECORD REVENUES AND EARNINGS FOR THE THIRD QUARTER OF 2005

MENLO PARK, California, October 20, 2005—Robert Half International Inc. (NYSE symbol: RHI) today reported record revenues and earnings for the third quarter ended September 30, 2005.

For the quarter ended September 30, 2005, net income was $64.4 million or $.37 per share, on revenues of $867.0 million. Net income for the prior year’s third quarter was $43.1 million or $.24 per share, on revenues of $708.0 million.

For the nine months ended September 30, 2005, net income was $173.3 million or $.99 per share, on revenues of $2.5 billion. For the nine months ended September 30, 2004, net income was $90.9 million or $.52 per share, on revenues of $1.9 billion.

Harold M. Messmer, Jr., chairman and CEO of Robert Half International Inc., said: “We were pleased with our financial results for the third quarter. Revenues and net income per share increased 22 percent and 52 percent, respectively, from the third quarter of 2004.”

Messmer continued, “Our staffing operations performed well across the board. All divisions contributed to the sequential and year-over-year revenue growth rates.

“Protiviti, our internal audit and risk consulting subsidiary, also had an excellent quarter. Revenues were up 28 percent year over year and up 15 percent sequentially. We have seen continued demand for Protiviti’s full suite of internal audit and business and technology risk consulting services.”

Robert Half International management will conduct a conference call today at 5 p.m. EDT to discuss the quarterly financial results. The dial-in number is 800-540-0559 (+1-785-832-1508 outside the United States) and the passcode is “Robert Half International.” A taped recording of this call will be available for replay beginning at approximately 8 p.m. EDT today and ending at 8 p.m. EDT on October 27, 2005. The dial-in number for the replay is 800-839-9307 (+1-402-220-6085 outside the United States). The conference call will also be archived in audio format on the company’s website at www.rhi.com.

Founded in 1948, Robert Half International Inc. (RHI) is the world’s first and largest specialized staffing firm. RHI is a recognized leader in professional staffing and consulting services and is the parent company of Protiviti^® (www.protiviti.com), a leading independent internal audit and risk consulting firm.

The company’s specialized staffing divisions include Accountemps^®, Robert Half^® Finance & Accounting and Robert Half^® Management Resources, for temporary, full-time and project professionals, respectively, in the fields of accounting and finance; OfficeTeam^®, for highly skilled temporary administrative support personnel; Robert Half^® Technology, for information technology professionals; Robert Half^® Legal, for legal personnel; and The Creative Group^®, for advertising, marketing and web design professionals. RHI serves its clients and

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candidates through more than 330 offices worldwide and through online job search services at its divisional websites, all of which can be accessed at www.rhi.com.

Certain information contained in this press release may be deemed forward-looking statements regarding events and financial trends that may affect the company’s future operating results or financial positions. These statements may be identified by words such as “estimate”, “forecast”, “project”, “plan”, “intend”, “believe”, “expect”, “anticipate”, or variations or negatives thereof, or by similar or comparable words or phrases. Forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those expressed in the statements.

These risks and uncertainties include, but are not limited to, the following: changes in levels of unemployment and other economic conditions in the United States or foreign countries where the company does business, or in particular regions or industries; reduction in the supply of candidates for temporary employment or the company’s ability to attract candidates; the entry of new competitors into the marketplace or expansion by existing competitors; the ability of the company to maintain existing client relationships and attract new clients in the context of changing economic or competitive conditions; the impact of competitive pressures, including any change in the demand for the company’s services, on the company’s ability to maintain its margins; the possibility of the company incurring liability for its activities, including the activities of its temporary employees, or for events impacting its temporary employees on clients’ premises; the possibility that adverse publicity could impact the company’s ability to attract and retain clients and candidates; the success of the company in attracting, training, and retaining qualified management personnel and other staff employees; whether governments will impose additional regulations or licensing requirements on personnel services businesses in particular or on employer/employee relationships in general; whether there will be ongoing demand for Sarbanes-Oxley or other regulatory compliance services; and litigation relating to prior or current transactions or activities, including litigation that may be disclosed from time to time in the company’s SEC filings.

Additionally, with respect to Protiviti, other risks and uncertainties include the fact that future success will depend on its ability to retain employees and attract clients; there can be no assurance that there will be ongoing demand for Sarbanes-Oxley or other regulatory compliance services; failure to produce projected revenues could adversely affect financial results; and there is the possibility of involvement in litigation relating to prior or current transactions or activities.

Because long-term contracts are not a significant part of the company’s business, future results cannot be reliably predicted by considering past trends or extrapolating past results. The company undertakes no obligation to update information contained in this release.

A copy of this press release is available at www.rhi.com.

ATTACHED:	Summary of Operations
	Supplemental Financial Information

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ROBERT HALF INTERNATIONAL INC. AND SUBSIDIARIES

SUMMARY OF OPERATIONS

(in thousands, except per share amounts)

	Quarter Ended September 30,						Nine Months Ended September 30,
	2005			2004			2005			2004
	(Unaudited)						(Unaudited)
Net service revenues	$	867,015		$	707,987		$	2,453,674		$	1,921,499
Direct costs of services		511,005			425,652			1,447,549			1,168,505
Gross margin		356,010			282,335			1,006,125			752,994
Selling, general and administrative expenses		253,445			212,155			727,831			602,263
Amortization of intangible assets		93			99			241			926
Interest income		(3,169	)		(1,127	)		(7,148	)		(2,505	)
Income before income taxes		105,641			71,208			285,201			152,310
Provision for income taxes		41,202			28,128			111,940			61,373
Net income	$	64,439		$	43,080		$	173,261		$	90,937
Diluted net income per share	$	.37		$	.24		$	.99		$	.52
Shares:
Basic		166,553			170,041			167,900			169,714
Diluted		174,219			176,636			174,664			176,234

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ROBERT HALF INTERNATIONAL INC. AND SUBSIDIARIES

SUPPLEMENTAL FINANCIAL INFORMATION

(in thousands)

	Quarter Ended September 30,				Nine Months Ended September 30,
	2005		2004		2005		2004
	(Unaudited)				(Unaudited)
REVENUES:
Accountemps	$	316,328	$	257,090	$	905,860	$	728,266
OfficeTeam		175,473		149,024		500,595		426,153
Robert Half Technology		80,194		70,570		220,691		195,331
Robert Half Management Resources		109,653		95,277		316,979		245,397
Robert Half Finance & Accounting		57,156		35,768		158,683		98,935
Protiviti		128,211		100,258		350,866		227,417
Total	$	867,015	$	707,987	$	2,453,674	$	1,921,499
GROSS MARGIN:
Temporary and consultant staffing	$	247,627	$	207,058	$	705,410	$	570,376
Permanent placement staffing		57,156		35,768		158,683		98,935
Risk consulting and internal audit services		51,227		39,509		142,032		83,683
Total	$	356,010	$	282,335	$	1,006,125	$	752,994
OPERATING INCOME:
Temporary and consultant staffing	$	67,399	$	46,369	$	177,526	$	102,598
Permanent placement staffing		11,549		4,353		34,299		12,609
Risk consulting and internal audit services		23,617		19,458		66,469		35,524
Total	$	102,565	$	70,180	$	278,294	$	150,731
SELECTED CASH FLOW INFORMATION:
Amortization of intangible assets	$	93	$	99	$	241	$	926
Depreciation expense	$	13,257	$	12,027	$	37,439	$	37,253
Capital expenditures	$	19,533	$	9,902	$	41,006	$	23,102
Open market repurchases of common stock (shares)		1,783		1,254		6,731		2,173

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ROBERT HALF INTERNATIONAL INC. AND SUBSIDIARIES

SUPPLEMENTAL FINANCIAL INFORMATION

(in thousands)

	September 30,
	2005		2004
	(Unaudited)
SELECTED BALANCE SHEET INFORMATION:
Cash and cash equivalents	$	420,726	$	321,951
Marketable securities	$	—	$	90,621
Accounts receivable, less allowances	$	456,415	$	369,237
Total assets	$	1,271,132	$	1,141,768
Current liabilities	$	350,831	$	282,462
Notes payable and other indebtedness, less current portion	$	2,715	$	2,286
Total stockholders’ equity	$	914,637	$	853,825

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