Thirty-four states, plus the District of Columbia, have passed statutes enacting comprehensive public medical marijuana programs.
In most states, medical marijuana patients must see a physician, apply to the state program, pay a fee, and receive an ID card enabling them to purchase marijuana products at sanctioned dispensaries.
The states shaded in the attached map have decriminalized medical marijuana to some degree, but many still afford employers wide discretion over how to handle marijuana usage among employees. Some states have statutes prohibiting adverse employer actions and discrimination against medical marijuana card holders. Some states require accommodation for employees who use medical marijuana, but no states require employers to accommodate on-duty use. For specific information concerning the medical marijuana laws for each state in which your company operates, talk to your legal counsel.