Most of the times I try to put a worker to his dream job the game crashes, this doesn't happen every time. I have managed to get 1 worker to his dream job but the rest of them just makes the game crash.
I'm on a Nokia Lumia 620 running Windows Phone 8, there are many events that cause the game to crash but, at least for me, these crashes seem to be random, the only event that always causes the game to crash is assigning some workers to their dream jobs. It doesn't happen with all the workers, I have been able to assign some of them to their dream job, but some others just cause the game to crash. It is character dependant since when I try to assign the same character to its dream job, it crashes again.