Robert Half Inc.

RHI: Founded in 1948, Robert Half provides temporary, permanent, and outcome-based staffing for both in-person and remote positions in the finance and accounting, technology, legal, marketing, and administrative fields. Its subsidiary consulting arm, Protiviti, specializes in technology, risk, auditing, and compliance matters. The firm generates most of its sales inside the U.S. and stands as one of the largest specialized firms in the highly fragmented U.S. staffing industry. The firm generates annual revenue of around $7 billion.