ROCHESTER, N.Y.--(BUSINESS WIRE)--Paychex, Inc., one of the nation’s leading providers in retirement recordkeeping services for businesses, ranks as the largest recordkeeper by total number of defined contribution plans, according to a recent survey from PLANSPONSOR magazine, a national publication dedicated to the pension and retirement industry. Serving 68,000 plans, Paychex has earned the honor five consecutive years. “Paychex is extremely proud to partner with business owners, and their emp