Changes to Alberta’s occupational health and safety (OHS) legislation reflect Alberta farmers and ranchers. Alberta’s OHS laws only apply to farm and ranch operations that employ waged workers who are not the owner or the owner’s family members. There are some exemptions. See farm and ranch exemptions at the end of this document. A guide to rights and obligations for farmers and workers under Alberta's OHS legislation. Provides information about hazard identification and control, incident reporting and investigations.