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Become a member

3F-BJMF organizes building workers in the Copenhagen area, together with our sister unions, the painters' union, the plumber's union, the blacksmiths union and the electricians union

If you are unsure about which trade union you should sign up for, please contact us. 

Click here to become a member of 3F BJMF 

If you live with your employer and you do not want to receive mail from 3F, then please contact us and we will try to help you. We can create a contact address elsewhere.

No CPR number?

If you have not received a cpr.nr, you can not sign up to 3F. 

But if you work in the construction industry, 3F BJMF will do whatever we can to help you get a cpr.nr. 

When or if we are successful, we will back date your membership and the membership dues to the day you first came to BJMF.