Tucson Local Media:  “Arizona voters legalized medical marijuana a few years ago, but employers are still adjusting to how these new laws affect how they handle their employees.  In some ways, medical marijuana use is no different than any other prescription drug. But it is still an intoxicant and even with a medical marijuana card, there are restrictions on use by workers.  It is a tricky time for many employers: There are state and federal patient rights to uphold, but marijuana, even for medical use, is still illegal under federal law.