[Norwegian are legislatively required to provide training to the crews on the aircraft they operate.][/QUOTE]
No they are not! For type rated and current Pilots, Norwegian are only required to provide a company conversion course according to their part D manual and training as required to comply with their own SOPs. The " bond" refers to pilots whom require conversion training in order to be in a position to carry out their duties, under these circumstances, the bond is entirely enforceable as the pilots have the choice to except the employment under these terms or not according to the employment contract. My point regarding the agency you appear to have misunderstood. If an agency is providing pilots via a crew lease agreement, it is taken as read the pilots are already capable of performing the task required. In this case, the contract of employment is with the agency not the airline and as such any " additional training" given by the airline may be considered to fall outside of the contract. It would appear there must be two contracts here. 1) a training contract with the airline and 2) an employment contract with the agency. IF there is only one contract, with the agency, then the additional training carried out by the airline would have to be stipulated as an employment condition within the agency contract for the bond to be enforceable.