Studied history in Utrecht. After obtaining his masters in 1987, he came to the IISH in 1987, where he set up the Institute's publishing house, Stichting beheer IISG. Joined the Publications department in 1992. Has worked from 1998 as book review editor of the International Review of Social History, for which he compiled the annotated Bibliography until 2011, and as managing editor for the Institute's book publications. From July 2007 onward, he is the executive editor of the International Review of Social History.
Present position: executive editor of the International Review of Social History, and head of the task group Publications.
Main research interests: historiography of social and labour history; the role of intellectuals in the development of social-democratic ideology; the influence of informatization on labour and society.