Oasis, A Paychex Company, is a leading Professional Employer Organization (PEO). We provide Human Resources Administration, E ... mployee Benefits, Healthcare Reform Support, Payroll Administration, Workers’ Compensation services and much more. Our human resources-related products and services allow small- and medium-sized businesses to compete with those offered by Fortune 500 companies. Contact us at 1-866-AT-OASIS (286-2747) or www.OasisAdvantage.com. read more