(Associated Press) Pot may be legal, but workers may want to check with their boss first before they grab the pipe or joint during off hours.

Businesses in Washington state, where the drug is legal, and Colorado, where it will be by January, are trying to figure out how to deal with employees who use it on their own time and then fail a drug test.

It is another uncertainty that has come with pot legalization as many ask how the laws will affect them.

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