Phillip Villegas, 43, was one of three employees killed on December 2, 1993, when a gunman opened fire inside the California Employment Development Department office in Oxnard, California. Villegas worked as an unemployment office supervisor and was shot when Alan Douglas Winterbourne entered the office armed with a rifle, a shotgun, and a handgun and began firing without any prior warning or argument.

The attack also killed Anna Velasco, 42, and Richard Bateman, 65, and wounded four other people. After fleeing the scene, Winterbourne led police on a high-speed chase, shot and killed Oxnard Police Officer James E. O'Brien during the pursuit, and was later shot and killed by officers outside another unemployment office in Ventura after emerging with a rifle. No other suspects or conspirators were identified.

Reports say no clear motive was established and there was no known dispute between Winterbourne and the unemployment office.