RePEc relies completely on volunteer work, and some of them do work that is invisible from the outside. One of those is Christian Calmès, Associate Professor of Economics at the Université du Québec en Outaouais (Canada) and the “enforcer” on NEP. NEP is a collection of mailing lists that distribute announcements of new working papers in currently 87 fields. Those announcements are vetted by volunteers editors, who decide which papers are relevant for their fields. Subscribers expect to receive timely messages about once a week, and Calmès makes sure editors do their job. If necessary, he relieves them of their duties (after some warning). On occasion, this has meant that he had to take over managing a list, in the absence of an available volunteer. Currently, he manages NEP-BEC (Business Economics), NEP-BAN (Banking) and NEP-REG (Regulation).