Great article! When I worked at Highland Valley Copper, in a 10-year period I saw eight people lose their job because they tested positive to marijuana. One individual I know well lost his job only three weeks ago.
Once smoked, the THC stays in your system for up to 30 days. HVC random tests, once pot is legalized they won’t be changing the rules, test positive, your terminated. You have lost a job that pays in most cases over $100,000 a year.
Most industrialized workplaces apply the same rules. When they learn you lost your last job for testing positive to having smoked marijuana, you’re not likely to get hired. It may be legal but it will be a long time before it is treated no differently than alcohol.