If you work a regular schedule of 20 hours or more each week and have worked for your employer for more than 6 of the last 12 months, you are a full-time worker. If you work a varying schedule, you determine whether you work an average of fewer than 20 hours by looking at: The period since you became employed, if your total period of employment is less than 90 days; or The most recent 90 days. Overtime is not included in this determination. See The Worker Adjustment and Retraining Notification (WARN) Act Guide to Advance Notice of Closings and Layoffs for examples.