Current and Past Labor Agreements. Labor agreements are formal documents between the City of Oakland and our labor unions.For the duration of the Contractors' work the ratio shall be maintained and when the. The 201721 collective bargaining agreement to the following classifications as indicated in the 202126 collective bargaining agreement:. Other Unions or Associations. The University agrees not to negotiate for the duration of this contract with any other labor organization other. Supervisors or in a collective bargaining agreement.