On June 26, Oklahoma voters by a large margin approved State Question 788, making medical marijuana legal in the Sooner State. Beginning July 26, Oklahoma residents will have the right to apply for a license permitting them to use marijuana and marijuana products for medicinal purposes. Almost immediately after the poll results were in, employers began asking how the introduction of medical marijuana will affect their workplaces and their employment policies, particularly those policies concerning drug testing, safety and discipline. More.