Cesar Chavez Day is a federal commemorative holiday in the U.S. by proclamation of President Obama in 2014. César Chávez Day is observed on March 31 each year. It celebrates the birthday of César Estrada Chávez and it serves as a tribute to his commitment to social justice and respect for human dignity.  It is an official state holiday in six states: Arizona, California, Michigan, New Mexico, Utah, and Wisconsin.