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Exhibit 12.2

Aon Corporation and Consolidated Subsidiaries
Combined With Unconsolidated Subsidiaries
Computation of Ratio of Earnings to Combined Fixed Charges
and Preferred Stock Dividends

			Years Ended December 31,
(millions except ratios)			2008		2007			2006		2005		2004
Income from continuing operations before provision for income taxes			$	863	$	1,012		$	728	$	555	$	509
Less: Earnings from unconsolidated entities under the equity method of accounting				5		6			5		7		3
Add back fixed charges:
	Interest on indebtedness			126		138			129		125		136
	Interest on FIN 48 liabilities			—		(2	)		—		—		—
	Portion of rents representative of interest factor			47		75			79		71		73
		Income as adjusted	$	1,031	$	1,217		$	931	$	744	$	715
Fixed charges and preferred stock dividends:
	Interest on indebtedness		$	126	$	138		$	129	$	125	$	136
	Preferred stock dividends			—		—			—		3		3
		Interest and dividends		126		138			129		128		139
	Portion of rents representative of interest factor			47		75			79		71		73
		Total fixed charges and preferred stock dividends	$	173	$	213		$	208	$	199	$	212
Ratio of earnings to combined fixed charges and preferred stock dividends				6.0		5.7			4.5		3.7		3.4

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Exhibit 12.2

Aon Corporation and Consolidated Subsidiaries Combined With Unconsolidated Subsidiaries Computation of Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends