When osha decides to proceed with issuing a new or revised standard it must publish a Notice of Proposed Rulemaking (NPRM).
OSHA has the authority to start the standards-setting process either on its own action plan or in response to requests from other parties, such as the Secretary of Health and Human Services (HHS), the National Institute for Occupational Safety and Health (NIOSH), state and local  governments, whatever nationally known standards-producing organization, employer or labor representatives, or any other interested party.
Employers are required to provide their staff advance notice of applications for permanent variances and information about their right to request a hearing. The employer or workers may ask OSHA to alter or withdraw a permanent variance at any time following the issuing of the variance for six months. OSHA may potentially take this action on its own initiative.
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