Professional employer organization Insperity Inc. (NYSE: NSP) reported revenue rose 12.2%, and the Houston-based firm also named a former Automatic Data Processing (NYSE: ADP) executive to its board.

The increase in revenue came amid a 13% increase in the average number of worksite employees paid per month, according to the company. Worksite employee growth was the result of new client sales driven by an increased number of business performance advisors and retention of clients.

However, net hiring of worksite employees by clients during the quarter was lower than recent trends.

Separately, Insperity today announced its board of directors appointed Timothy Clifford as a new independent director. Clifford currently serves as president and CEO of Frontline Education, a private equity backed cloud software company that manages human resources functions at more than 7,500 US public school districts. In addition, he was a corporate officer and co-president of Automatic Data Processing (NYSE: ADP) national accounts from 2010 through 2013. Prior to that, Clifford was CEO of human capital software firm Workscape Inc. until it was acquired by ADP in 2010.

Share price and market cap

Shares in Insperity fell 7.71% to $69.40 in early afternoon trade. The company had a market cap of $1.48 billion, according to Yahoo.