Ask for a change of start date. It is not their business what you do with your personal life. All you have to say is you had something personal come up and you

Ask for a change of start date. It is not their business what you do with your personal life. All you have to say is you had something personal come up and you need to move your stuff out by a month. You run the risk of them rejecting you, but otherwise it seems the company policies will have rejected you anyways. Most companies are willing to wait for an employee they've already agreed to. Also it is very possible that they're looking for things other than marijuana. You should find out what the type of test is.