[celiboy]

In my experience the only times they will do a comprehensive background check (credit score, financial risk indicators) is when applying for any government job. I have never heard of a Cdn employer doing a drug test before hiring.

I should also note that many companies have a requirement that they must check a reference from your current employer as a last step. This can be sticky if you get a bad reference b/c then you won't get the new job and your current boss will know you are looking. Normally this is just a formality.