Pros
It is a place where you can learn much about payroll and the technical side of Payroll and HRIS systems very fast. YOu will also develpo CRM skills quickly, since you will have negotiate often with other departments to get things done. Associates are very helpful on peer-to-peer basis. In the Solution Center this is critical, because in many instances you are left to sink or swim on your own ADP also provide alot of training for their products and support associates earning certifications. Their online educational and elearning systems for any subject is great - but probably typical for a large Fortune 500 firm. As a learning ground, ADP is a great place to work.
Cons
Management likes to talk about work-life balance but, at least in the Solution Center, middle management put it in practice capriciously and use it as a"carrot-and-stick" when associates ask for accomodations. Stress levels are high and the team I worked on had over a 100% turnover; only 4 original team members out of 18 remained when I left. Career progression, advancement opportunities, cross-training for Associates are not well-managed by management nor by the HR Group. Tenure is over-emaphasized over performance and marginal employees who have been employed there for a long period - the least senior person I worked with had been there 9 years- exert much more influence over management than employees with a higher performance level.