I have a part - time driver who is in a drug and alcohol testing program with his full - time employer. (foleyservices.com)
An employer is always free to negotiate drug and alcohol testing policies with the union. (slaw.ca)
For random and unannounced drug / alcohol testing in a safety sensitive environment, the goal would be that the employees performing the job are doing so under conditions that do not compromise safety. (toronto-employmentlawyer.com)