This applies even if you aren't leaving an old job. If I'm on the job search, and I get an offer for 3 month probation, they are effectively asking me to end my

This applies even if you aren't leaving an old job. If I'm on the job search, and I get an offer for 3 month probation, they are effectively asking me to end my job search for a chance. If the job doesn't pan out (for any reason, not just that I was a bad coder or something), you can't put 3 months on a resume, so I would have effectively been unemployed for 3 months, on top of however long prior to the probation.