Yes I can see what you mean.
Normally if taken on full-time permanent employment you would be bonded for say 3 years and pay back the bond equally over the 3 years.
If a contract that would normally be for current type-rated pilots who would need minimal refresher training in the sim for the LPC/OPC, SEPs, line training and the like. Maybe short-term, 6 month, contract (for the summer for example).
To offer an (initial) short-term contract to non-type rated pilots is a bit different and puts the cost and the risk on the contractor with minimal outlay for the employer.
Perhaps that's why there's another Thread in the Wannabees section - maybe Norwegian see this as an attractive prospect for 'cadet/wannabee' pilots, but expect that no self-respecting experienced non-type rated pilot would be serious in their application for such a short-term contract with risk at the end of the initial 6 months with respect to continued employment and base?
Not sure I've seen this before?!