be a (fully) paid-up member of something(redirected from is paid-up members)
be a (fully) paid-up member of something
To be a certified member of a particular group or organization; to have paid the necessary dues or fees to be part of a group. I never knew until he was on his deathbed that my father was a paid-up member of the Freemasons. You'll have to be a fully paid-up member of the union before we can give you any regular shifts on the docks.