In September, California’s Office of Environmental Health Hazard Assessment (“OEHHA”) announced that it had adopted amendments to the regulations governing California’s Proposition 65, which requires that businesses provide a “clear and reasonable warning” before exposing an individual to any chemicals that California has determined cause cancer or reproductive harm. Although a business can create its own warning and hope that a court will conclude it is “clear and reasonable,” OEHHA has promulgated a series of regulations establishing a so-called “safe harbor” — warnings that are considered per se clear and reasonable. So, although OEHHA dubs the safe harbor warnings as “non-mandatory guidance,” for any company not willing to bear the risk of creating its own warning, the “safe harbor” regulations are de facto requirements.