ROCHESTER, N.Y.--( BUSINESS WIRE )-- Paychex, Inc., a leading provider of payroll, human resource, insurance, and benefits outsourcing solutions for small- to medium-sized businesses, today announced enhancements to the Paychex Mobile smartphone application for iPhone ® and Android™ to now include employer and employee access to health and benefits information, as well as employer access to company-level flexible spending account (FSA) information.