I came into an organization that was already using ADP Totalsource as a HR/Benefits solution due to a lack of previous personnel in the HR space. The organization was about 80 people when I joined and was about 175 when we left total source. ADPTS is a good solution for a small organization with minimal HR capacity, our HR partner on the ADP side, Tarena, was AMAZING and the interface itself was fairly easy to manage on the admin side. We ended up leaving after multiple years of around 10% increases to cost of benefits and the inability to get a clear picture on exactly what certain components were costing. In the end, I'd say it's a good short term solution (or possibly long term) for very small businesses, but once you hit 75-100 employees, it's a good time to move on.
Great HR partner from ADP, fairly easy to use system, all in one platform saved a lot of time on the benefits administration side.
Expensive, no way to individually negotiate benefits so you're tied to whatever increase they negotiate for the full PEO, not a lot of wiggle room in the product, no transparency or separation of cost by piece of product, just one large bill.
Time used: 1-2 years