U.A. Local No. 159 Defined Benefit Plan is a multi-employer defined benefit union pension fund based in Dublin, California. Established in 1976, the plan is maintained pursuant to collective bargaining agreements by and between Local Union No. 159 of the United Association of the journeyman and apprentices of plumbing and pipe fitting industry of the United States and Canada, AFL-CIO and various other associations of employers and individual employers engaging in the plumbing and pipe fitting industry in Contra Costa County. The assets of the plan are managed by the board of trustees.