Canada Occupational Health and Safety Regulations

10.15 The employer shall keep a written or computerized record of the instruction and training given to every employee and

• (a) make it readily available for examination by the employee; and

• (b) keep it for a period of two years after the employee ceases

  • (i) to handle or be exposed to the hazardous substance, or

  • (ii) to install, operate, maintain or repair the assembly of pipes.