May 1 is the International Day of Workers or International Labour Day dedicated to workers and labourers across the world. This day celebrates labourers and encourages them to be aware of their rights. The day has its origins in the labour union movement, specifically the eight-hour day movement. Popularly known as May Day, the day is observed in countries such as India, Cuba and China among other countries.
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May Day 2021: Know history and significance of Labour Day | Hindustan Times