FOR IMMEDIATE RELEASE Exhibit 99.1 Contact: M. Keith Waddell President and Chief Executive Officer (650) 234-6000 ROBERT HALF REPORTS THIRD-QUARTER FINANCIAL RESULTS MENLO PARK, Calif., October 22, 2025 — Robert Half Inc. (NYSE symbol: RHI) today reported revenues and earnings for the third quarter ended September 30, 2025. For the three months ended September 30, 2025, net income was $43 million, or$0.43 per share, on revenues of $1.354 billion. For the three months ended September 30, 2024, net income wa ...