“As a jockey I work with horses, but at least it’s a stable job!”

This line is from Charles Lamb and it plays on the double meaning of the word stable: 1) a building where horses are kept; 2) not likely to change.

The job of a jockey is stable because he is not going to lose his job and there is always work to do.  Jockey’s work in stables.

Have a great Labor Day if you are in the U.S. or if you need a reason to celebrate!