Section 252.20  Unlawful Employer Practices

a)         It is unlawful for any employer to take any adverse action against an employee because the employee:

1)         exercises rights or attempts to exercise rights under the Act;

2)         opposes practices that the employee believes to be in violation of the Act; or

3)         supports the exercise of rights of another under the Act.

b)         Exercising rights under the Act includes:

1)         filing an action or instituting or causing to be instituted any proceeding under, or related to, the Act;

2)         providing or agreeing to provide any information in connection with any inquiry or proceeding relating to any right provided under the Act; or

3)         testifying, or agreeing to testify, in any inquiry or proceeding relating to any right provided under the Act. [820 ILCS 154/20]