An easy job or task, as in He really has a soft job—his assistants do nearly all the work. This colloquial expression uses soft in the sense of “involving little or no hardship or discomfort.” It was first put as soft employment in 1639.
Examples from the Web for soft job
There is no hope for Britain if soft-handed, soft-job mandarins retain the reins.John Brown
Captain R. W. Campbell