HR Outsourcing, Payroll, and Benefits Solutions for Every Business At HRO Advisors, we simplify the way you shop for HR Outsourcing Solutions. First and foremost, we eliminate the hassle and time it takes to evaluate multiple vendors . With over a decade of experience partnering with regional and national PEO Vendors. We complementary shop the market for several all in-one HR Outsourcing (PEO) providers or À la carte , Payroll, benefits and 401k Services then present you with proposals that meet your needs.