Other accrued expenses consist of the following:


	December 31,
	2022		2021
(in thousands)
Interest rate caps and accrued interest payable	$	33,168	$	19,922
Operating lease liability		21,584		20,415
Client deposits		16,521		13,623
General liability insurance reserve		12,937		7,131
Rebates due to retailers		12,693		17,396
Employee medical self-insurance reserves		10,007		8,161
Client refunds related to the Take 5 Matter		9,416		9,424
Taxes		7,286		5,357
Holdbacks		2,247		15,564
Contingent consideration		1,674		41,522
Other accrued expenses		5,640		5,618
Total other accrued expenses	$	133,173	$	164,133

Other long-term liabilities consist of the following:


	December 31,
	2022		2021
(in thousands)
Operating lease liability	$	56,371	$	40,444
Workers' compensation		32,377		31,401
Contingent consideration		18,660		16,844
Other long-term liabilities		3,146		3,529
Total other long-term liabilities	$	110,554	$	92,218

Under the workers’ compensation programs, the estimated liability for claims incurred but unpaid at December 31, 2022 and 2021 were $57.2 million and $57.7 million, respectively. These amounts include reported claims as well as claims incurred but not reported. As of December 31, 2022, $24.8 million and $32.4 million of this liability was included in the “Accrued compensation and benefits” and “Other long-term liabilities” in the Consolidated Balance Sheets, respectively. As of December 31, 2021, $26.3 million and $31.4 million of this liability was included in the “Accrued compensation and benefits” and “Other long-term liabilities” in the Consolidated Balance Sheets, respectively. In connection with its deductible limits, the Company has standby letters-of-credit as of December 31, 2022 and 2021 in the amount of $44.5 million and $54.8 million, respectively, and $16.0 million and $10.0 million surety bond as of such years supporting the estimated unpaid claim liabilities.

The Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) (as further described in Note 16, Income Taxes) provides for deferred payment of the employer portion of social security taxes between March 27, 2020 and December 31, 2020, with 50% of the deferred amount due December 31, 2021 and the remaining 50% due December 31, 2022. The Company began deferring payment of the employer share of the security taxes in April 2020. The Company repaid $23.8 million and $24.0 million during the years ended December 31, 2022 and 2021, respectively.

Each reporting period, the Company measures the fair value of its contingent liabilities by evaluating the significant unobservable inputs and probability weightings using Monte Carlo simulations. Any resulting decreases or increases in the fair value result in a corresponding gain or loss reported in “Selling, general, and administrative expenses” in the Consolidated Statements of Operations and Comprehensive (Loss) Income. The Company has reassessed the fair value of contingent consideration based on the achievement of performance targets as defined in the respective purchase agreements and it resulted in a fair value adjustment of a $4.8 million loss that was included in “Selling, general, and administrative expenses” in the Consolidated Statements of Operations and Comprehensive (Loss) Income. As of December 31, 2022, the maximum potential payment outcomes were $112.2 million.

The following table summarizes the changes in the carrying value of the contingent consideration liabilities:


	December 31,
(in thousands)	2022			2021
Beginning of the period	$	58,366		$	45,901
Fair value of acquisitions		510			19,832
Changes in fair value		4,774			5,763
Payments		(42,711	)		(11,949	)
Measurement period adjustments		—			(1,181	)
Foreign exchange translation effects		(605	)		—
End of the period	$	20,334		$	58,366