if its ok for the foreman to control the workers, you would then say its ok for the foreman to hold the workers at gun point while they work?
id say the control is immoral, in all forms. Voluntary agreement and consent are fine but then its not surveillance, its people saying where they are. the patient wants the doctor to know where they are and what they are doing, and not just letting the doctor decide on their own what to know.
the worker wants the foreman to know that they are present and working, in fulfilment of their contract together. its not surveillance either.
the jewelry store itself is immoral, but private property and control thereof is a tradeoff we've made