I disagree. Firstly, it will set a precedent for personal privacy over pure business interests and, secondly, CCTV can monitor physical locations where privacy

I disagree. Firstly, it will set a precedent for personal privacy over pure business interests and, secondly, CCTV can monitor physical locations where privacy is not to be expected but your private communications cannot be made public without your consent on a case by case basis. I'm quite convinced that you cannot sign away your legal rights on an employment contract and even if you were coerced to do so, the contract becomes illegal by definition. I'm not a lawyer though.