I'm surprised at this thread, I worked at JAF for a year as a Cpt, we had about 35 Dutch FOs join in March, they all knew it was a 10 month contract. Most of them had paid 120,000 euro for the complete course at KLM Flt Academy, inc the 737 TR and all got paid while flying. Of course, they all wanted to be kept on, but they knew the terms when they took up the scheme. I'm not saying this is right or wrong, but from the industry point of view it is at least giving guys the chance to build 500 hrs or so and make themselves more attractive in the job market and get paid while doing it.
I would say that well over half of the guys I flew with wanted to go to KLM to work and all accepted it may be a 3 or 4 year wait. Surely this is KLMs problem not JAF?