Final answer:
The minimum number of days notice for an OREC format hearing is 60, based on the WARN Act.
Step-by-step explanation:
The minimum number of days notice for an OREC format hearing is 60. This is based on the Worker Adjustment and Retraining Notification (WARN) Act, which requires employers with more than 100 employees to provide written notice 60 days before plant closings or large layoffs.