Job-hopping is on the rise in Japan as more and more companies bid farewell to the lifetime employment system. But some managers are still so unprepared for the departure of a subordinate that they often behave irrationally -- sometimes to the point of being downright silly.

So says a recent report by Recruit Agent Co., a major Tokyo-based job-placement agency, which gauged the views of 1,700 people, mostly in their 20s and 30s, about how their bosses reacted when they said they were leaving.

Bosses were put into five different categories according to their responses.