Request for exemption from these regulations, or any part thereof, shall be made in writing to the Secretary and shall contain a statement of reasons supporting the request. Exemptions may be granted for good cause. State Apprenticeship Councils shall notify the Department of any such exemptions granted affecting a substantial number of employers and the reasons therefor. (Approved by the Office of Management and Budget under control number 1205-0224) [43 FR 20760, May 12, 1978, as amended at 49 FR 18295, Apr. 30, 1984]