Landstar provides for the estimated costs of self-insured claims primarily on an actuarial basis. The amount recorded for the estimated liability for claims incurred is based upon the facts and circumstances known on the applicable balance sheet date. The ultimate resolution of these claims may be for an amount greater or less than the amount estimated by management. The Company continually revises its existing claim estimates as new or revised information becomes available on the status of each claim. Historically, the Company has experienced both favorable and unfavorable development of prior years’ claims estimates.

The following table summarizes the adverse effect of the increase in the cost of insurance claims resulting from unfavorable development of prior year self-insured claims estimates on operating income, net income and earnings per share set forth in the consolidated statements of income for the

twenty-six-week

and thirteen-week periods ended June 26, 2021 and June 27, 2020 (in thousands, except per share amounts):


	Twenty Six Weeks Ended				Thirteen Weeks Ended
	June 26, 2021		June 27, 2020		June 26, 2021		June 27, 2020
Operating income	$	980	$	5,039	$	1,272	$	2,816
Net income	$	741	$	3,820	$	962	$	2,135
Diluted earnings per share	$	0.02	$	0.10	$	0.03	$	0.06