Working for Britney Spears is like owning a Gremlin, they both come with a set of instructions -- the biggest one ... keep Britney away from drugs and alcohol!
TMZ has obtained a non-disclosure agreement (NDA) that dancers were required to sign before working on her latest music video. It specifically states, "Contractor acknowledges that it is essential that [Britney] not be exposed to any alcohol, drugs, or controlled substances."
The NDA even goes on to say that the dancers can be subjected to drug testing at any time and can be fired for failing a test or even refusing to take one.
With Britney comes much responsibility.