No, this is not an invasion of your privacy. In exchange for all of this, you are being paid. Additionally, in an "at will" employment setting, a company can set the conditions of the work much as it sees fit. This includes the activity that you describe. Accordingly, unless this action in some way constitutes some form of legally actionable discrimination or violates the terms of an employment contract or union agreement, it is perfectly permissible under the law. At this point, if you disagree with this treatment you can either complain but risk termination or quit. I'm afraid that's about it.