There are many ways to cancel your GMB membership, whether you’re looking for a permanent solution or something more personal. Online membership cancellation and/or registration is possible. This is a simple process and may be easier than you think. GMB members, and any dependents over 50 years old, can get healthcare coverage through the GMB health plan. It includes a number of benefits, including free legal assistance through Unionline, which is owned by the GMB and available to members only.