California Labor Code
Every private employer regularly employing 25 or more employees shall reasonably accommodate any employee who wishes to voluntarily enter and participate in an alcohol or drug rehabilitation program, provided that this reasonable accommodation does not impose an undue hardship on the employer.
Nothing in this chapter shall be construed to prohibit an employer from refusing to hire, or discharging an employee who, because of the employee's current use of alcohol or drugs, is unable to perform his or her duties, or cannot perform the duties in a manner which would not endanger his or her health or safety or the health or safety of others.
The employer shall make reasonable efforts to safeguard the privacy of the employee as to the fact that he or she has enrolled in an alcohol or drug rehabilitation program.
Nothing in this chapter shall be construed to require an employer to provide time off with pay, except that an employee may use sick leave to which he or she is entitled for the purpose of entering and participating in an alcohol or drug rehabilitation program.
An employee may file a complaint with the Labor Commissioner if he or she believes that he or she has been denied reasonable accommodation as required by this chapter. Sections 98, 98.1, 98.2, 98.3, 98.4, 98.5, 98.6, and 98.7 shall be applicable to a complaint filed pursuant to this section.