ADP TotalSource vs Oasis PEO

ADP TotalSource (NASDAQ – ADP) provides a comprehensive cloud-based solution for employee life cycle management that spans HR administration, talent management, employee benefits, payroll, and regulatory compliance. They have over 60 years of experience and employ many professionals in HR, talent, and compliance, which they use to give you considerable purchasing power for premium advantages—  without the premium costs. They offer four payroll options that serve all business sizes, with features that range from basic payroll, taxes, and compliance assistance all the way to a premium suite of tools that includes HR support, training, business advice, and legal assistance. Pricing information for these options is not advertised as it is tailored to company size and requirements, so you must fill out a form for a quote. They are a large PEO company that claims to have more than 80% of the Fortune 500 businesses as clients and around one million clients in 140 countries, and they accordingly employ over 60,000 associates to meet their clients' needs.
 

Paychex acquired Oasis Outsourcing in 2018 for $1.2 billion in cash. Oasis Outsourcing was an ESAC-accredited human resources services company based in Florida that offered services in human resources, employee benefits, and payroll processing. The acquisition was about building revenue, and Paychex aimed to grow its human resource outsourcing capability and extend its technology to a new client base as part of the acquisition. While Oasis initially operated as its own entity, it is now fully part of the Paychex brand as one of the available solutions in "Paychex HR."