Reducing the number of hours/jobs that people currently work would reduce the labor supply and wages would rise (Econ 101). I don't see how these "consequences"

Reducing the number of hours/jobs that people currently work would reduce the labor supply and wages would rise (Econ 101). I don't see how these "consequences" are a bad thing. Furthermore, "unforeseen consequences" are effects that we don't know will happen because they lie beyond our ability to predict them. There will always be unforeseen consequences of any major policy decision.