FAQs How do I become a Union Carpenter? To learn more about becoming a Union Carpenter call 215-569-1634 or visit http://www.carpentersofphila.com/become-an-apprentice/ How do I become a Union Contractor? For more information on how to become a Union Contractor, please email email@example.com How do I pay my Dues? To pay your dues over the phone call 215-569-1634 ask for the financial secretary. Credit cards are now being accepted.