lor,

the best thing would be to read over all the policies a company or business has before accepting a positions.

i can't speak for other businesses, but we have all applicants read ours while waiting for their interview.

we have to do a complete background check and also periodic drug screening. if an applicant won't do these, then it's not anyone's time being wasted by interviewing.

ask what the companies policies are if they don't offer.