• Content last reviewed: May 2016

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 or in writing, contact the regional dive office closest to the diving operation.

Regional Dive Offices

Northern Region

159 Cedar Street, Suite 301
Sudbury ON P3E 6A5
Tel: 705-564-7306 ext. 47306
Toll-free: 1-800-461-6325
Fax: 705-564-7437

Central Region

17345 Leslie St, Unit 102
Newmarket ON L3Y 9A3
Tel: 905 953-3999
Toll-free: 1-888-299-3138
Fax: 905-715-7609

Eastern Region

347 Preston Street, 4th Floor
Ottawa, ON K1S 3J4
Tel: 613-228-8050 ext.3055
Toll-free: 1-800-267-1916
Fax: 613-727-2900

Western Region

119 King Street West, 13th Floor
Hamilton ON L8P 4Y7
Tel: 905-577-6221
Toll-free: 1-800-263-6906
Fax: 905-577-1324

217 York Street, 5th Floor
London ON N6A 5P9
Tel: 519-439-2210
Toll-free: 1-800-265-1676
Fax: 519-672-0268

4510 Rhodes Drive, Suite 610
Windsor, ON N8W 5K5
Tel: 519-256-8277
Toll-free: 1-800-265-5140
Fax: 519-258-1321

Health and Safety Contact Centre

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

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

Other ways to contact us.