A really really large number of programmers work for places like government contrators, banks, and insurance companies - the types of places that have blanket d

A really really large number of programmers work for places like government contrators, banks, and insurance companies - the types of places that have blanket drug policies for all employees. There's probably a lot more companies that have such policies but they aren't enforced (unless something bad happens requiring it) because insurance gives discounts for having the policy, but thye will lose employees if they start enforcing it in a serious way.