 Workers’ Memorial Day is now an international day of remembrance of workers killed in incidents at work, or by diseases caused by work, and annually on April 28, Workers' Memorial Day events are held throughout the world.Some examples include active campaigning, and workplace awareness events.Public events include speeches, multi-faith religious services, laying wreaths, planting trees, unveiling monuments, balloon releases, raising public awareness of issues and laying out empty shoes to symbolize those who have died at work.