Margriet Spijker

Margriet Spijker

Margriet Spijker is general manager of private Dutch staffing firm Timing, a part of the ADG services group. According to research from Staffing Industry Analysts, Timing is the fifth-largest staffing firm in the Netherlands. Spijker has more than 25 years’ experience in the industry, having joined the company as a consultant in 1988 and held(…)

Thierry Geffroy

Thierry Geffroy

Thierry Geffroy is the CEO of Samsic RH, the staffing business owned by the French facility management group Samsic. Samsic RH ranks among the 10 largest staffing firms in France, and as one of the largest privately owned firms in the market. In March 2017, Samsic RH announced the acquisition of two staffing businesses in Spain.

Herwig Muyldermans

Herwig Muyldermans

Herwig Muyldermans is the general director of Federgon, the Belgian staffing association. He plays a central role in negotiating with the Belgian government and its social partners on behalf of the Belgian staffing industry. His perseverance is helping result in the removal of one of the last restrictions to temporary agency work in the country;(…)

Mark Verstraete

Mark Verstraete

Mark Verstraete is the managing director of t-groep, the sixth-largest staffing firm in Belgium and the 31st-largest in Europe with operations in the Netherlands and Poland. In 2008, Verstraete led the acquisition of the Dutch privately held human resource company Luba by t-groep, starting its international expansion and strengthening its position in the Benelux market(…)

Dinette Koolhaas

Dinette Koolhaas

Based in Switzerland, Dinette Koolhaas serves as VP and operations leader, EMEA, for Kelly Services. Koolhaas is also a board member for Kelly’s joint venture, TS Kelly Asia Pacific. Koolhaas joined Kelly Services in 2008 as VP and regional general manager for Western Europe, where she led eight country general managers to deliver on regional and(…)

Rob Zandbergen

Rob Zandbergen

Rob Zandbergen was appointed CEO of USG People in 2010, having served as the company’s CFO since 2005. Zandbergen was CFO of Belgian staffing group Solvus between 2003 and 2005, when the company was acquired by USG People. In addition to his work at USG People, Zandbergen is a member of the supervisory board of(…)