What is "colaborer"

Usage examples of "colaborer".

My dear colaborer, you and I can't effec­tively fulfill our callings if we don't watch after our health.

The reason that women nowadays are so much more efficient colaborers with the men, and at the same time are so happy, is that, in regard to their work as well as men's, we follow the principle of providing every one the kind of occupation he or she is best adapted to.