The office I work in has light switches located near an elevator. This switches control the lights in my department.
It is a fairly often occasion where, when waiting for the elevator to arrive, people will lean against the wall and accidentally flip the light switches. They only seem to notice it about once out of every four times it happens.
Since this is a place of professional business, I can't just duct tape the lights on, it would look far too tacky. Also, though I'm not around at night to tell for sure, I assume the lights are turned off when everybody has gone home, so I can't do too "permanent" of a solution.
How might I be able to keep the light switch on in a professional-looking manner, while also not disabling the functionality completely?