National Day of Mourning Every year on April 28th we honour the millions of Ontarians whose lives have been forever changed by a workplace incident. April 28th is a day to join together in our commitment to eliminate all workplace injuries and fatalities. After all, they can all be prevented — “There Really Are No Accidents”. Mark the Day Workplace parties and trade unions traditionally mark the Day with vigils, services, or candle-lighting ceremonies; unveiling monuments; flying flags at half-mast; or, wearing ribbons and black armbands. A moment of silence is often observed at 11:00 am. The date was chosen in 1984, when the Canadian Labour Congress proclaimed the Day to coincide with the 70th anniversary of the day the first Ontario Worker’s Compensation Act’s was approved by the government. The Day of Mourning was enshrined in national legislation by an Act of Parliament on February 1, 1991. Show your support and become part of a historic ceremony by visiting prevent-it.ca and lighting a candle online.