U.S. Department of Labor
WARN Advisor
Is My Employer Covered by WARN?
To determine if the employees average a combined work week of 4,000 or more hours you must figure out how many workers work a full work week, including those who have worked for fewer than 6 months, and multiply that number by a full work week (for example, if there are 90 full-time workers and 10 part-time workers who also work a full work week, and a full work week is 40 hours, then 100 x 40 = 4,000 and the threshold is met. In the same example, if a full work week is 35 hours, then 100 x 35 = 3,500 and the threshold is not met.)
If some part-time workers work fewer than 20 hours per week, you must figure out the hours that each such worker works and add that to the time the full-time workers work (for example, if there are 90 workers who work 40 hours per week (3,600 hours) and 22 workers who work 19 hours per week (418 hours), the total hours for the workforce is 4,018 and the threshold is met.)
