You need to be specific about what legal jurisdiction you're talking about here then - the world is a very big place and different laws apply. I'm not aware of

You need to be specific about what legal jurisdiction you're talking about here then - the world is a very big place and different laws apply. I'm not aware of any EU wide laws that prevent what you're talking about here. In the UK an employment contract will state that the employer can monitor your activity if they need to and this is completely legal. Source: https://www.gov.uk/monitoring-work-workers-rights https://www.gov.uk/monitoring-work-workers-rights In some countries (Germany springs to mind) there are much stricter rules. A blanket statement like the one you've made here is not correct unless you're being very specific about where you're talking about.