100% yes. In fact, you’re REQUIRED TO if the workplace is enclosed (although a parking lot won’t qualify) thanks to the BC Tobacco & Vapour Products Control Act& Reg, which requires employers to ban indoor smoking at the workplace. Here’s a detailed analysis of indoor smoking laws we recently posted on OHSI. https://ohsinsider.com/topics/workplace-smoking-vaping-the-5-things-you-must-do-to-comply-with-new-smoke-free-laws   Here’s a chart summarizing the indoor smoking laws of not only BC but all other jurisdictions. https://ohsinsider.com/topics/compliance-cheat-sheet-workplace-smoking-vaping-laws-in-each-part-of-canada  As you can see, BC doesn’t allow for Designated Smoking Rooms. It also extends the indoor smoking ban to work vehicles (the way most jurisdictions do),
Hope that helps. Glenn