25 years ago I used Paychex. They were awesome. Call in time on Friday and an envelope full of ready to sign pay checks and analysis printouts arrived the following Tuesday morning.
They made it easy to see which activities and accounts were profitable....or not.
Thus over a couple of years I cut personnel from 26 down to 5, and made the same profit.
Keeping legal with federal and state income tax withholdings, FICA, unemployment insurance, workers comp, and the occasional insurance or tax audit was well worth the modest charge.
Taking that off my secretary (or me) was good for other areas of the business that needed attention.
I don't miss those days. :-)
Lee