Mark Westerberg North Bay Field Office Labor Relations Representative Redwood City Chapter 5 Labor Relations Representative San Mateo County Chapter 158 Labor Relations Representative San Carlos Chapter 263 Labor Relations Representative Ravenswood Chapter 303 Labor Relations Representative Belmont Chapter 308 Labor Relations Representative San Mateo City Chapter 411 Labor Relations Representative Hillsborough Elementary Chapter 465 Labor Relations Representative San Mateo Union High School District Chapter 519 Labor Relations Representative San Mateo COE - Support Personnel Chapter 789 Labor Relations Representative San Mateo COE Chapter 887 Labor Relations Representative Send Email Provide your contact information and submit an email message below. Full Name Email Address Daytime Phone Number CSEA Chapter or Retiree Council Not Sure? Look up your CSEA Chapter or Retiree Council. Message Contact me by: Email Phone * Required Fields