Labor Day is observed in the Marshall Islands every first Friday of September and is one of the most important holidays in the country. The celebration honors the work of the rijerbal, or common workers, who perform daily manual labor. This public holiday was officially recognized after the Marshall Islands joined the International Labor Organization in 2007. The event provides an opportunity for the rijerbal to enjoy a day off and participate in various festivities, including parades and fairs organized in their honor. The social structure of the Marshall Islands includes three classes: the iroji (chief), the alap (owner or elder), and the rijerbal, with the latter being celebrated on Labor Day. The customs and celebrations may vary across the islands, reflecting the diverse social dynamics within the community.