In Sri Lanka, May Day is a highly celebrated holiday. This annual holiday falls on May 1st, which is celebrated worldwide as International Workers Day or Labour Day. In Sri Lanka, the day is a public holiday marked with rallies, demonstrations, and gatherings by labor unions and political parties. It is an occasion when workers' rights are highlighted and the toils of the workforce are acknowledged.

Celebrations across Sri Lanka include parades, speeches, and processions, typically led by political leaders or trade union representatives. Trade unions, workers' rights groups, and even students join in the processions that fill the streets of local towns, cities and villages. Often, these parades are accompanied by traditional music, singing, and dancing, creating an atmospheric environment brimming with unity and camaraderie amongst workers.

However, it's not just a day of protest and demonstrations; many Sri Lankans also spend May Day engaging in sports activities, community service, and fellowship. In certain parts, people also hold festivities, such as communal meals and cultural shows, to celebrate solidarity and unity among the labor force. In addition to its social significance, May Day in Sri Lanka also reflects the colourful culture, vibrant traditions, and the strong sense of social justice in the country.