The change is necessary for sure, but the person you're replying to was making the point that the 'allow' in the title is silly. Because it implies that it was previously legally forbidden to refuse a call from your boss.

Your work environment may be shitty (I work in a professional environment as well and no way am I answering to anyone outside of my hours) but that doesn't mean the law is forcing you to answer the phone.

So yeah, good law, bad title.