Pros
Work-Life Balance is nice. Managers value your right to have time for your personal life. Unless you seek such jobs, work ends at 5/6pm and you don't need to worry about work until the next morning. No work to do from home or anything like that. Opportunities are abundant. With the size of the organization, there are opportunities to go where you desire. Even if you take a job you aren't thrilled with to get in with the company, most jobs ask for a 12-18 month commitment and then you can post for promotions and other opportunities. During your commitment, you are encouraged to explore and get familiar with other roles in the organization and are encouraged to also work on your own personal development. Steady employment. Despite economic troubles in our country the past many years, Paychex has still grown.
Cons
Pay is at market for entry level positions. Earning above market does not come until you have performed well or received promotions into other roles.