Be extra careful of the male lawmakers who sleep in their offices - they can be trouble. Avoid finding yourself alone with a congressman or senator in elevators, late-night meetings or events where alcohol is flowing. And think twice before speaking out about sexual harassment from a boss - it could cost you your career. These are a few of the unwritten rules that some female lawmakers, staff and interns say they follow on Capitol Hill, where they say harassment and coercion is pervasive on both sides of the rotunda. There is also the creep list" - an informal roster passed along by word-of-mouth, consisting of the male members most notorious for inappropriate behavior. CNN spoke with more than 50 lawmakers, current and former Hill aides and political veterans who have worked in Congress, the majority of whom spoke anonymously to be candid and avoid potential repercussions. With few exceptions, every person said they have personally experienced sexual harassment on the Hill or know of others who have. On Tuesday, a House committee held a hearing to examine the chamber's sexual harassment policies, and the Senate last week passed a resolution making sexual harassment training mandatory for senators, staff and interns - two clear acknowledgments of the need for reform. Travis Moore, a former aide to ex-Rep. Henry Waxman, started a signature-gathering campaign last week calling on congressional leaders to reform "inadequate" sexual harassment. His letter has gathered over 1,500 signatures.