One in Four Canadian Cannabis Users Had Used Before or During Work — and They Looked Different From Off-the-Clock Users

In a survey of 1,651 Canadian workers conducted in June 2018 — just months before recreational legalization — a quarter of those reporting past-year cannabis use said they'd used before or at work. These workplace users weren't just recreational users who happened to be at work. They had a distinct profile.

Compared to off-the-clock cannabis users, workplace users were significantly more likely to use cannabis daily, use for medical or mixed medical-recreational purposes, and prefer high-THC products. Several personal factors predicted workplace use: younger age, being male, lower education, poorer self-rated health, and having a physically demanding or monotonous job.

The medical use dimension complicated the picture. Some workplace cannabis use wasn't reckless — it was people managing pain, anxiety, or other conditions during work hours. The policy challenge of distinguishing impaired use from therapeutic use was already present before legalization formalized it.

Workplace cannabis use is the third rail of legalization policy. This study put numbers to it for the first time in Canada and found the rate was substantial — 1 in 4 users. The finding that workplace users were more likely to be medical users adds nuance: workplace drug policies designed around recreational intoxication may inadvertently penalize workers managing legitimate health conditions.

The pre-legalization timing makes this a baseline. Whether these patterns changed after recreational legalization became a critical follow-up question.