Workers' Compensation Claims (Tables)

12 Months Ended

Dec. 31, 2021

Summarizes Aggregate Workers' Compensation Reserve Activity

The following table summarizes the aggregate workers' compensation reserve activity (in thousands):

	Years Ended December 31,
	2021			2020			2019
Beginning balance
Workers' compensation claims liabilities	$	357,746		$	438,986		$	413,397
Add: claims expense accrual
Current period		75,786			147,097			161,691
Prior periods		(9,225	)		(6,383	)		(13,355	)
		66,561			140,714			148,336
Less: claim payments related to
Current period		15,063			22,877			24,414
Prior periods		129,138			198,620			98,445
		144,201			221,497			122,859
Change in claims incurred in excess of retention limits		(699	)		(457	)		112
Ending balance
Workers' compensation claims liabilities	$	279,407		$	357,746		$	438,986
Incurred but not reported (IBNR)	$	153,838		$	210,798		$	285,191

Ratio of IBNR to workers' compensation claims liabilities		55	%		59	%		65	%

Summary of Risk Retained by Insured Program after Considering Loss Portfolio Transfers and Current Insurance Arrangements

The following is a summary of the risk retained by the Company under its insured program after considering the effects of the loss portfolio transfers and current insurance arrangements:

Year	Claims risk retained
2014	No
2015	No
2016	No
2017	No
2018 ⁽¹⁾	No
2019 ⁽¹⁾	Yes
2020	Yes
2021 - Through June 30	Yes
2021 - July 1 and after	No

(1) LPT 2 excluded approximately 10% of claims from 2018 and included an approximately offsetting amount of claims from 2019.