A PEO can be an excellent solution for outsourcing your domestic HR duties but are not designed to help you expand internationally. Advantages of using a PEO Relieves your businesses of many HR-related tasks Offers domestic compliance support in all supported states Bolsters your domestic HR Saves you money in the long run Disadvantages of using a PEO Does not support international expansion Does not take full legal responsibility in case of international compliance issues Does not help with creating employment contracts PEOs can be accredited in the US. The IRS certifies PEOs under the CPEO program (Certification Program for Professional Employer Organizations), while ESAC (Employer Services Assurance Corporation) serves as the independent third-party accreditation provider. PEOs in the US are usually members of NAPEO (National Association of Professional Employer Organizations).