The U.S. Department of Labor’s Occupational Safety and Health Administration issued an updated its internal whistleblower investigation manual this month with the latest information on case-handling procedures, new laws, and a guide to address retaliation complaints under 21 whistleblower statutes assigned to OSHA.

The manual, which was last updated in 2003, includes new regulations and corrections and enhancements to the previous version. Significant changes to the manual include: