OPCMIA Local 633

Welcome to Operative Plasterers and Cement Masons Local 633. This local covers Minnesota, North Dakota and North Western Wisconsin.

The Union Cement Masons and Plasterers are highly regarded for thier proud tradition, superior training, skilled craftmanship and job safety. founded in 1864, the Cement Masons and Plasterers founded the first Building Trades Union, pioneering the way for workers' rights.

Our goal is to educate our members on all of the details of their union, union leaders, the union apprenticeship program and benefits available to union members.

If you are considering becoming a member of Local 633, we hope you will find the information on this website helpful.

Mission Statement

To train our members to the highest of standards and enable them to be exemplary craftsmen and citizens for the benefit of their livelihood, the Union, the industry and the United States.