Which Country Celebrates Labor Day May 1st. In 1889, an international organization for workers and socialists in paris declared may 1st as international workers’ day. International workers' day or labor day is celebrated on may 1 and honors the contributions of workers, promotes their rights, and commemorates the labor.

Over 150 countries designate may 1 as a public holiday, from. A vast majority of countries across the globe come together to celebrate international workers’ day on may 1st.