The Day of Mourning held annually on April 28th was enshrined in national legislation by an Act of Parliament on February 1, 1991 to coincide with the anniversary of the first Ontario Workers Compensation Act (1917). We have provided a number of DOM downloadable materials (posters, flyers, stickers) so members and employers can mark the day with vigils, services, or candle-lighting ceremonies; unveiling monuments, flying flags at half-mast, or wearing ribbons, armbands or stickers. A moment of silence is often observed at 11:00 am.