SOI is a leading professional employer organization (PEO) for small and medium-sized businesses (SMBs) serving as nationally.

SOI is a leading professional employer organization (PEO) for small and medium-sized businesses (SMBs) serving as a trusted partner in integrated human resource (HR) compliance, risk management, employee benefits, employment practices liability insurance (EPLI), and payroll processing. SOI is based in Charlotte, NC and supports tens of thousands of worksite employees throughout the U.S. For more details, visit www.soi.com.