2. Willingness to Work
4. Reliability and Dependability
UPDATE November 2013:
I cam across a blog entry about job applications, where an applicant was spiked by a drug test. He passed the urine test, as he had stopped smoking pot several months earlier.
However, a hair test showed use of marijuana - as he had long hair, and it the THC residue (or whatever) was still present in his hair.
I suggested he cut his hair. Seriously. Destroy the evidence.
One employer on the site suggested that it would better for a candidate to just walk away from a job where a drug test is required - if you know that you are going to fail. You are just wasting the employer's time - and you cannot later apply for the job, after you are "clean".
Both good advice.
A lot of other responses were about how "unfair" it all was. Why should an employer care about drug use?
Simple. Stoners are horrible employees. They are late for work, always are "starting something" and are unreliable. A drug test is a good way to weed out troublemakers.
If you want a job, stop smoking pot. Actually, you would be surprised how it helps the rest of your life as well....
I didn't mention it in the original posting, but if you are having trouble getting a job, and you have a major drug or alcohol problem, maybe now is the time to examine your habits.
I gave up drugs and even drinking, when I was 25. I quickly finished school, got a good-paying job, and went to Law School at night. I would not have been able to do that, if I was stoned and drunk all the time, as I was in my early 20's.
I am self-employed now, so I can do what I want to do. But the urge to get stoned and shitfaced has tapered off over the years.
Funny how that works.