The World Federation of Trade Unions (WFTU), representing 105 million workers in 133 countries of the planet, sends a warm militant and internationalist greeting to the workers of the world, on the occasion of May Day 2021, this important day for the world working class. Each reflection, action and plan of the WFTU – especially in this difficult period for the workers and peoples of the world – has as its sole guide the interests of the working class. This 2021 will be a year of preparation for the world’s largest trade union event – the 18th World Trade Union Congress.