When voters in Washington and Colorado voted Nov. 6, 2012, to legalize the recreational use of marijuana, it set off alarm bells for in-house counsel in those states. They peppered their outside counsel with questions about whether the new state laws jeopardize corporate zero- tolerance drug policies and drug-testing programs. 

For now, it appears their concerns are largely unfounded. Employment lawyers are advising clients the laws do not require substantive changes in corporate policies because marijuana is still banned under federal law. They cite decisions by