Section 4801. Definitions

When used in this article:
    1.  "Workplace"  means  any  location away from the home, permanent or
  temporary, where any employee performs  any  work-related  duty  in  the
  course of his employment.
    2. "Toxic substance" means any substance which is listed in the latest
  printed  edition  of  the National Institute for Occupational Safety and
  Health Registry of Toxic Effects of Chemical Substances or  has  yielded
  positive evidence of acute or chronic health hazards in human, animal or
  other biological testing.
    3.  "Employer"  means  any  individual,  partnership,  corporation  or
  association engaged in a business who has employees including the  state
  and its political subdivisions. The term "employer" does not include the
  employment  of domestic workers or casual laborers employed at the place
  of residence of his or her employer.