He served in the X Legislature of the Congress of Baja California Sur from 2002 to 2005 as a member of the Institutional Revolutionary Party (PRI).
[1] He worked for Exportadora de Sal S.A. (ESSA), a salt production company headquartered in the nearby town of Guerrero Negro, and rose the ranks of the ESSA workers' union, the Sindicato Salinero, which formed a part of the Confederación Revolucionaria de Obreros y Campesinos (CROC).
[1][2] Garayzar reached the position of union leader and was well-respected for his defense of workers' rights.
In the 2002 elections, Garayzar won a seat representing the 14th district in the X Legislature of the Congress of Baja California Sur as a member of the Institutional Revolutionary Party (PRI).
[1][2] Garayzar died in Guerrero Negro in late 2018; he was survived by his wife, Rosa Isela, as well as his daughter, Beatriz.