> Accepting a job and then deciding the wage is not enough for the duties you have to perform after the fact just slows the process down for everyone and usually puts extra work load on your colleagues.

Uh,no. It's usually getting more and more work coz someone left/got fired and employer goes "well, productivity looks the same" (coz everyone is working that bit more) "why hire more?".

Or frankly you just learned more and are more productive than you were year ago... for same wage.