• Content last reviewed: September 2019

Injuries sustained by commercial divers are usually fatal. A lack of operational and contingency planning is often the root cause of diving accidents. Divers are at risk if hazards are not identified and adequately handled, and if emergency management measures and procedures are not in place.



Fact Sheets


Safety Guidelines for the Film and Television Industry in Ontario


Sector Plans

CSA Standards

  • Z275.1 - Hyperbaric Facilities
  • Z275.2 - Occupational Safety Code for Diving Operations
  • Z275.4 - Competency Standard for Diving, Hyperbaric Chamber, and Remotely Operated Vehicle Operations
  • Z275.6 - Unexploded Explosive Ordnance (UXO) and Munitions Diving

View CSA Standards cited in OHSA regulations.

Diving Industry



Notice of Diving Operations

Use the Notice of Diving Operations form to notify the Ministry of Labour at least 24 hours before the start of a diving operation in Ontario. This form may be filled out and submitted electronically.

To notify the ministry orally, contact the Health and Safety Contact Centre:

Toll-free: 1-877-202-0008
TTY: 1-855-653-9260

You can also call this number to:

  • Report incidents, critical injuries or fatalities. If this is an emergency call 911 immediately.
  • Make workplace health and safety inquiries.
  • Report unsafe work practices.