While in theory the market punishes bad employers by making people not want to work for them, the reality is that for all but the most in-demand individuals, the power asymmetry between an individual and their employer is such that some level of government regulation is probably needed to maintain reasonable working conditions. You could certainly argue whether regulating this particular thing is a good idea or not of course.
Why are you trying to deny people the representation they deserve and prevent the government from doing something people might want? Seems like some ideologically-based bullshit to me.
Again I ask why you seek to deny others their rights?
For the same reason anything is a government issue, i.e. that we regulate acceptable and unacceptable behaviors as a society, and periodically adjust what we find acceptable?
If your employer starts dumping large amounts of trash on your property tomorrow and says "oh that's just part of our relationship with you", I bet you'll want to get the government involved real quick because you never agreed to this.
> But in the trash example, if you indeed never agreed to it, that's already a legal issue and rightly so.
That's exactly what this legislation is doing. All it's saying is, if you want off-hours work, make it explicit rather than implicit. If you fire people by expecting firefighting when it's not specified in the contract, you will break the law.