And it's worth noting that this "expectation of privacy" depends on the jurisdiction, and in EU there have been numerous legal tests asserting that employees do

And it's worth noting that this "expectation of privacy" depends on the jurisdiction, and in EU there have been numerous legal tests asserting that employees do have an expectation of privacy even when e.g. checking personal email on their company computers in company offices during work hours; so if you have a multinational company you need to acknowledge that you might be prohibited to apply the same IT policies for all your physical locations.