Reply #4: I think it depends on state, however, generally a sign is posted at the enterance...

[Solon]

Something like "This premises is monitored by Closed Circuit Cameras". In any event, it is legal for businesses to monitor their own premises with the exceptions of bathrooms or any areas where the people undress, such as public showers in gyms, dressing rooms in malls and stores, etc. Some states have stricter laws when it comes to audio recordings, in other words, visual is OK in some instances, audio is not. Also some have varying laws in regards to informing customers or employees. You said it was a globe, I imagine that the camera is more of a deterrence rather than actual surveillance, otherwise it would be less obvious.