We all know that smoking is bad for your health. But it turns out that it’s also bad for business. A study by the U.S. Centers for Disease Control (CDC) found that smokers cost their employers about $5,800 a year. The bulk of that cost comes from downtime: every time a worker steps outside for a smoke, it eats up 5 or 10 minutes from the workday. The CDC also found that smokers missed 2.5 more days of work per year than non-smokers. Healthcare costs in the U.S. accounted for the rest. Even though your workers would be covered by provincial healthcare plans, you’ve got one more reason to encourage them to butt out.