For administrative purposes, BATU divides its membership into 2 categories:
ORDINARY BRANCH Members (OB)
You can join as a OB member if your company has established a bargaining relationship with the Union. BATU negotiates with your employer on behalf of all members of the company, for a Collective Agreement that deals with specific terms and conditions of employment.
GENERAL BRANCH Members (GB)
You are eligible to join as a GB member if you do not fall into the OB category.