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Even supporters say it may be a while before the law's effects are fully felt. Among other things, existing union contracts that include mandatory dues remain in effect until they expire.
One of the most hard-fought changes in Michigan history -- right-to-work legislation -- takes effect today, but its effects are largely unknown and not expected to be immediate. In neighboring Indiana, the impact is only beginning to be felt one year after a similar law took effect, in March 2012.
