A resident wears socks featuring marijuana leaf while standing behind a bong during the 420 Day festival on the lawns of Parliament Hill in Ottawa, Ontario, Canada (Photographer: Chris Roussakis/Bloomberg)
(Bloomberg Businessweek) -- The stories all go something like this: An employee is ordered to take a drug test. They have a medical marijuana prescription for a legitimate illness and tell their employer as much. The employer goes ahead with the test, gets back the positive results, and fires the employee.