Pretty sure you cant withold union dues...the whole dues check off system is the result of court decision:
Quote:
In Canadian labour law, the Rand formula (also referred to as automatic check-off) is a workplace situation where the payment of trade union dues is mandatory regardless of the worker's union status. This formula is designed to ensure that no employee will opt out of the union simply to avoid dues yet reap the benefits of the union's accomplishments (such as ensuring higher wages, better job security or other benefits). Supreme Court of Canada Justice Ivan Rand, the eponym of this law, introduced this formula in 1946 as an arbitration decision ending the Ford Strike of 1945 in Windsor, Ontario.
But theres hope for you yet:
Quote:
If there are religious objections to paying dues the dues may be donated to a mutually agreed upon charity per Canada Labour Code Section 70. (1)
So you could always convert to another religion in protest!