I am wondering how company's will handle "legal" weed with all the drug test policy's. If it is legal then it would be hard to hire or fire based on it coming up in a drug test assuming the person used on there own time.
I think with your question it is 100% up to you. As long as you amke it a policy and never sway from it you can hire or fire at will. All of our local hospital's will fire someone for having nicotine in there system because they have a strict no smoking policy on the books, so strict that even an electric cig is not aloud. so if you say my company is strictly weed free then you can do what you wish regardlas of the law at the state level.
You can never have to much horsepower or too much money.... It's just hard to have both.
A good friend will bail you out of jail but a best friend will be sitting next to you saying dang that was fun..