Labor Relations

The Labor Relations Services Unit develops and implements the County's labor relations goals, policies and priorities and manages the negotiations process with the employee associations/unions. Formerly a Unit of the Human Resources Department, the Labor Relations Service Unit was moved to the County Administrator's Office on July 1, 2014. Contact Number: 925-655-2068

Unrepresented employees are covered by the County's Management Resolutions and may access those documents here.

Labor OrganizationContract
Expiration Date		Total Number
of Employees1
AFSCME Local 512, Professional and Technical Employees
Side Letters 		6/30/2026242
AFSCME Local 2700, United Clerical, Technical and Specialized Employees
Side Letters (NONE)
6/30/20261,472
California Nurses Association
Side Letters (NONE)
9/30/20251,167
Contra Costa County Defenders Association
Side Letters (NONE)
6/30/202699
Contra Costa County Deputy District Attorneys Association
Side Letters (NONE)
6/30/202691
Deputy Sheriff's Association: Management Unit, Rank and File, and Probation
Mgmt Side Letters  R&F Side Letters  Probation Side Letters
6/30/20231,038
District Attorney Investigator's Association
Side Letters (NONE)
6/30/202626
Contra Costa County Firefighters Association, IAFF, Local 1230
Side Letters 
6/30/2023458
Physicians and Dentists of Contra Costa
Side Letters (NONE)
10/31/2025283
Professional and Technical Engineers, Local 21
Side Letters (NONE)
6/30/20261,238
AFSCME, Local One CSB Supervisor Unit
Side Letters (NONE) CSB Supervisor Unit Side Letters (NONE)
6/30/2026560
SEIU, Local 1021 Rank and File and Service Line Supervisors Units
R&F Side Letters(NONE)  SLS Side Letters(NONE)

SEIU, Local 2015 (IHSS) 
Side Letters (NONE)
6/30/2026


8/31/2026
868
Teamsters, Local 856
Side Letters (NONE)
6/30/20261,962
United Chief Officers' Association
Side Letters (NONE)
6/30/202317
Western Council of Engineers
Side Letters (NONE)
6/30/2026     23