One who serves for or only for hire.
Serving for hire; venal.
Your Alonzo is derided by a hireling! – Ailsa Paige by Robert W. Chambers
" Yes," chimed in his fellow " hireling," " and we thought the pleasantest place to put in our few remainin' hours- as the papers say when a feller's goin' to be hung- was with you." – The Depot Master by Joseph C. Lincoln