April 28 has been designated the Day of Mourning across Canada. This day honours the memory of those workers who have been killed, injured or suffered illness as a result of workplace incidents. The Day of Mourning was first recognized by the Canadian Labour Congress in 1984, and was designated a national day of observance with the passing of the Workers Mourning Act in 1991. It was on April 28, 1991 the federal government officially proclaimed the dare as a national Day of Mourning. Acknowledgement of this day is now observed by many countries throughout the world, but Canada was the first nation to honour their lost workers in this way. Across the country, people may show their respect in various ways, such as holding moments of silence, wearing ribbons or lighting candles. The Canadian flag on Parliament Hill is typically flown at half-mast on April 28.