With approximately 20 states and the District of Columbia legalizing the use of medical marijuana, drug testing has become a particularly hot topic for employers. Many of them are confused about what legalization means and what impact it has on them. That may be especially true in Washington, Colorado and as yet to be determined states where recreational marijuana use is now legal or may be legalized in the future.

Rich DeMatteo recently interviewed David Bell from USA Mobile Drug Testing, explaining it from an employee perspective, so we thought it would be a good idea to cover it from an employer’s perspective.…