My husband & I got our mortgage in January 2004.
He's foreign and had only arrived in Ireland the previous November and was only in his job less than a month at the time of our application. The bank's mortgage advisor kept asking "is he definately permanent".
Anyway we got the mortgage.
However I am a permanent civil servant and this may have had a bearing on the banks decision.
There may be a problem as even if you tell the bank that you are permanent, you employer will still have to fill in a form to state your annual gross salary. On this they will also have to say the status of your employment. Depending on your employer they may not be willing to state that you are permanent at this stage, as this may have legal implications in future (if you were dismissed).
I don't know if any of this helps, I know its impossible to know the best time to jump into the property market, however waiting a few more months might not be the end of the world, in terms of saving a deposit, being a lot more stable in your job, and the proprty market seems to be having a little stutter now.