I applied in-person. The process took 4 weeks. I interviewed at ADP in Nov 2009
Interview
I was an internal candidate, so my experience may have been different. ADP's interviews are pretty predictable. They want to know what you know about ADP, your division and the industry. Be prepared and be ready to handle objections. They also want to see how well you follow up and close for subsequent steps in the process.
I applied through other source. The process took 1+ week. I interviewed at ADP (Pleasanton, CA) in Feb 2008
Interview
Interview process was very thorough and with the managers you would be working with on a day to day. The managers were very smart and made sure you had a handle on all aspects of a company. There was a phone screen, a 1 on 1 interview with a manager, a personality test, and a group interview with a required presentation you give to them selling ADP's solutions.
Interview questions [1]
Question 1
An in depth review of your business acumen and how your prior experience has set you up for success in this position.