Every Equity member should know the industry rates:
And when it comes to low budget film or student films remember that it is illegal to work for less than the National Minimum wage.
Contact Equity if you are unclear on what your rights are or if you believe that a company or institution is employing you illegally.
If you see a job advertised anywhere that is flouting these laws then report it to Equity. Write to the company in question if you wish. Let them know that you are intending to report them and why. If enough of us do that, then they will soon get the message!