(820 ILCS 265/20)
    Sec. 20. Employee access to project.
        (1) An employer may not permit an employee who
    
violates Section 10, who tests positive for the presence of a drug in his or her system, or who refuses to submit to drug or alcohol testing as required under the employer's substance abuse prevention program under Section 15 to perform work on a public works project until the employee meets the conditions specified in subdivisions (2)(A) and (2)(B). An employer shall immediately remove an employee from work on a public works project if any of the following occurs:
            (A) The employee violates Section 10, tests
        
positive for the presence of a drug in his or her system, or refuses to submit to drug or alcohol testing as required under the employer's substance abuse prevention program.
            (B) An officer or employee of the contracting
        
agency, preferably one trained to recognize drug and alcohol abuse, has a reasonable suspicion that the employee is in violation of Section 10 and requests the employer to immediately remove the employee from work on the public works project for reasonable suspicion testing.
        (2) An employee who is barred or removed from work on
    
a public works project under subsection (1) may commence or return to work on the public works project upon his or her employer providing to the contracting agency documentation showing all of the following:
            (A) That the employee has tested negative for the
        
presence of drugs in his or her system and is not under the influence of alcohol as described in Section 10.
            (B) That the employee has been approved to
        
commence or return to work on the public works project in accordance with the employer's substance abuse prevention program.
            (C) Testing for the presence of drugs or alcohol
        
in an employee's system and the handling of test specimens was conducted in accordance with guidelines for laboratory testing procedures and chain-of-custody procedures established by the Substance Abuse and Mental Health Service Administration of the U.S. Department of Health and Human Services.
        (3) Upon successfully completing a rehabilitation
    
program, an employee shall be reinstated to his or her former employment status if work for which he or she is qualified exists.
(Source: P.A. 95-635, eff. 1-1-08.)