First quarter revenue at professional staffing firm Robert Half International Inc. (NYSE: RHI) rose 6.7% on a same billing-day, constant-currency basis to $1.39 billion. In reported rates, revenue grew 8.4%.

International revenue in same billing days and constant currency stood at 16.3%. Temporary and consultant staffing grew by 15.5%. Permanent placement revenue was up by 16.0%

Growth in the US in same billing days and constant currency stood at 4.2% in the first quarter. Temporary and consultant staffing grew by 3.9% and permanent placement by 14.8%.

Included in first-quarter 2018 earnings was a charge to the company’s provision for income taxes of $3 million, or $.02 per share, resulting from the estimated impact of additional guidance released pursuant to the 2017 Tax Cuts and Jobs Act.

Harold M. Messmer, Jr., chairman and CEO of Robert Half, commented, “We were pleased with the company’s performance in the first quarter, including across-the-board revenue growth in our US and non-US staffing and Protiviti operations, and particularly strong growth in our permanent placement division. These gains were fueled by continued small business optimism, a growing global economy and low unemployment rates in professional occupations.

Revenue by segment was broken down as follows.

In trading yesterday Robert Half International shares closed at $57.45, down 1.56% on the day and 5.56% below its 52-week high of $60.83, set on 20 April 2018. Based on its current share price the company has a market value of $7.25 billion.