Mexico's labor movement was repressed in places such as Cananea in the north. However the Constitution of 1917, instigated significant social reformes to the labor laws. According to some sources, A Labor Day parade was held in Mexico as early as 1913, but the holiday was first officially commenorated on May 1st, 1923. Labor day is not exclusive to Mexico, many countries celebrate Labor/Workers Day.
In Mexico, Labor day parades generally have large crowds holding banners to promote workers' right in the main streets of major cities. Labor day is a federal holiday, giving all Mexicans a day off from labor. It usually includes familes going to the movies and then out of coffee or a meal.