I applied through an employee referral. The process took 3 weeks. I interviewed at ADP (San Diego, CA) in Jan 2012
Interview
Started with Phone screening for Orange County office, ended up getting 1:1 interview in San Diego (hometown) on a Monday, two days later (Wednesday) went on half day ride-along with ADP employee to get a feel of daily operations, next week (Monday) came in for panel interview with 3 managers, then that Friday came in for 1:1 role play interview with VP of sales.
Really smooth process and everyone was really helpful on laying out a timeline for it. Not too difficult at all and pretty average questions. The people I dealt with were great overall.
Went smoothly the recruiter was very helpful in laying out the interview process. three rounds of interviews first screening with recruiter then zoom with hiring manager then onto shadowing/role play for final interview
Initial call with the recruiter, then intro call with Vice President, then pannel interview with hiring managers, after that the last step is a role play with hiring managers/Vice President