Standard Interpretations
OSHA requirements are set by statute, standards, and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Each letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information.
- 1910.135 - Bump caps would not provide adequate employee head protection for all exposures in manholes. - 01/21/1980
- 1910.135 - Clarification on standards for head protection. - 08/23/1983
- 1910.135 - Cranes and the use of protective helmets - 06/06/2024
- 1910.135 - Elliott Company's plant-wide hard hat program. - 11/30/1977
- 1910.135 - Exemption from wearing hard hats. - 01/26/1994
- 1910.135 - Head protection standard. - 07/13/1993
- 1910.135 - Interpretation of the Personal Protective Equipment standard - 07/03/1995
- 1910.135 - Painting or placement of adhesive stickers on protective helmet shell. - 10/27/2009
- 1910.135 - Testing of the WindGard. - 06/14/1977
- 1910.135 - The use of hard hats while working on roofs in hot weather - 08/01/2014
- 1910.135 - The wearing of hard hats. - 08/22/1977
- 1910.135(a)(1) - Cranes and the use of protective helmets - 06/06/2024
- 1910.135(b) - Acceptability of aluminum hard hats. - 06/25/2002
- 1910.135(b)(1) - Cranes and the use of protective helmets - 06/06/2024