My experience with standard wall switches and low voltage signals is that you will likely have a few failed switches. Sometimes the work, sometimes they don't.
They are usual copper contacts, often burnt or oxidised, hence don't make for a nice reliable contact at low voltage and mA level.
If you can run a diode, at a minimum ,through the contact, it may be better (20mA) or a load resistor.
No good upsetting the boss 
Kim