Law clerk to Honorary Milton L. Schwartz United States District Court (eastern district) California, 1984—1986. Associate Schwartz, Steinsapir, Dohrmann & Sommers LLP, Los Angeles, 1986—1990, partner, 1990—2009. Judge United States District Court (central district) California, since 2010.
Central district lawyer representative Ninth Circuit Judicial Conference, 1993—1996. Appointed member Federal Service Impasses Panel, Washington, 1994—1999.
Regional coordinator delegate/officer elections International Brotherhood Teamsters, 1995—1996, 1999—2000, 2005—2006. Board directors Western Center Law & Poverty, California Women's Law Center, Asian Pacific American Legal Center of Southern California. Member of Asain Pacific American Bar Association (advisory board member since 1998, founder), Southern California Chinese Lawyers Association (president 1992-1993), State Bar California (member Judicial Nominees Evaluation Commission 1996-1999), Los Angeles County Bar Association (board trustees 1993-1995).