International Labour Day, also known as May Day, is a public holiday celebrated in Laos and numerous other countries around the globe, on the 1st of May each year. The holiday honours the labour movement and the contributions that workers have made to the strength, prosperity, and well-being of the country. In the historical context, this day marks the protests of workers in the 19th century, primarily in the United States and Europe, demanding better working conditions and an eight-hour workday.

In Laos, a Southeast Asian country known for its mountainous terrain and vibrant cultural sights, International Labour Day is a national holiday. It is a day off for the general population where schools and most businesses are closed. The day is mostly spent in relaxation or enjoying recreational activities with family and friends. Some may choose this day to reflect on the importance of fair labour practices and workers' rights.

Rallies and parades usually characterise the celebration of the International Labour Day in many other parts of the world, but these kind of activities are generally not observed in Laos. Instead, the occasion is seen as a quiet day off to recuperate from work. It is also common for announcements or statements from government officials and employers on this day, acknowledging the vital role of workers in the country's economic growth, and their commitment to improving working conditions.