Well the members vote to strike in the majority or it doesn't go ahead. I am a member of the Unite union and im self employed.....Being a member has saved me about ÂŁ1000 this year and ÂŁ600 ish two years ago. All through the free C & G courses that the glasgow branch of unite run. IEE regs/ Testing and inspection all free including course material (Regs book ect.) All food and drink provided too.....Like I say it has saved me a considerable amount. I am also a union member because of the work that they do and I support...like exposing blacklisting and blatant H & S breaches. Everyone moans about H & S gone mad....and yet we loose a worker per week in the construction industry....Only the unions fight this trend...no other bugger bothers.
You also point out about unions sticking up for people who "do wrong". Well we have a right to a fair hearing in this country....And it is unions who try to ensure this to happen correctly. Again if your on your own working for a firm and find yourself victimised and sacked..if your not a union member you now have to cough up your tribunal fees...union members tend to have these covered. It's all about the right to a fair hearing/trial. If an employer finds himself facing a payout then im afraid he/they have not followed the law...A law that usually is very much pro employer.
Again "im s/e" what can the union do for me ? It's not really about that and more about standing together shoulder to shoulder in order to protect the ordinary man against the excesses of the state/employers/elite/top 5% ect ect ect. I think we would have bugger all of what we "enjoy" today if it were not for collective action by unions and the like.