Canada Occupational Health and Safety Regulations

15.11 Every employer shall keep a copy of

• (a) each report submitted pursuant to section 15.9 or subsection 15.10(1) for a period of 10 years following the submission of the report to the health and safety officer or the Minister; and

• (b) the record or report referred to in subsection 15.6(1), 15.7(1) or 15.8(1) for a period of 10 years following the hazardous occurrence.