Labour Day is a significant public holiday in the prosperous city-state of Monaco. The holiday, also known as International Workers' Day or May Day, is annually observed on the 1st of May in celebration of the labor force. It serves as a tribute to the contribution that workers have made to the unparalleled development, prosperity, and the high standard of living in Monaco.

The sturdy roots of this holiday lie deep in the nineteenth century labor movement advocating for an eight-hour work day. In modern day Monaco, Labour Day is marked by workers with much elan. It is a day off for the general populace where everyone takes a respite from their daily grind to commemorate hard work and dedication.

Monaco being a major centre of finance and commerce, there is a deep respect amongst the citizens for the contribution of workers. While there aren't large scale Labour Day parades or demonstrations due to the small size of Monaco, the significance of the day is reflected in the restful, serene manner in which it is observed. This day ultimately reinforces the value of labour, elevating the status of workers in the eyes of the society.