Ontario. Ministry of Labour. Occupational Health and Safety Branch

Enforces Occupational Health and Safety Act and Regulations including construction, industrial and mining health and safety, and health care workplace safety

inspects work sites

investigates refusals to work under unsafe conditions

investigates fatalities and serious accidents

promotes education and prevention

505 University Ave 19th Fl
Toronto, ON
M7A 1T7
Hours: Mon-Fri 8:30 am-5 pm
Phone: Toll Free: 1-877-202-0008
TTY: 1-855-653-9260


Paid workers and unpaid students, learners and trainees in provincially regulated industries


No walk-in service * call at any time to report injuries, fatalities or work refusals * call during office hours for general inquiries


Street parking close to entrance * wheelchair accessible automatic main entrance * elevator with braille and voice/tone features * barrier-free washroom including door and stall


English; French; other languages may be available

Primary Contact Person

Leon Genesove, Director (Acting)

Areas Served


Agency Type

Provincial Government