Labour Day 2025 Ontario Events. Monday, september 4 is labour day, and local labour councils and unions across canada will be holding events on all three days over the long weekend. Another key change came in the form of a change to ontario's occupational health and safety act which included a change that protects workers from virtual.
Explore ontario’s 2025 calendar of public holidays, observances, and major events. Discover the dates, significance, history, and celebrations that make ontario a hub for.