Not one bit- actually, I should clarify, not unless you put "Bad Standing with the TWU" on your CV/Resume when you're going for another union job. Being in the bad books with the TWU would only stop you from getting another job in a TWU shop (so unless you're looking to work for Shaw, you're safe).If I cross the picket line, and am witnessed as doing so, and assuming that they get the paperwork correct, and mark me as in Bad Standing in the union, will this prevent me from getting work with any other union?
If you're looking to become a limo driver, you're safe, if you're looking to become a teacher, you're safe. One union has no tie to any other union other than the word 'union'. They do not report to each other, they do not call each other up and go over member lists, and most importantly unless you're going to work for the Union itself, it's the company that hires you, not the union that represents its members.