Boyne Resorts has adopted a new policy requiring all workers to wear safety helmets when working on the mountains.

The new policy follows the death in March of Alexander Witt, an employee at Sugarloaf USA in Maine. Witt was not wearing a helmet while working on a steep trail at Sugarloaf, when he fell. The resort was fined $11,400 by the Occupational Safety and Health Administration.

Boyne Resorts operates nine ski resorts in the U.S. and Canada. A spokeswoman for Boyne told New Hampshire Public Radio that the new policy now applies to all its resorts, which also include Maine’s Sunday River and Loon Mountain in New Hampshire. The company also owns resorts in Michigan, Montana, Utah, Washington and British Columbia.