"Prevention is collaboration, a permanent dialogue with teams in the field and management": that's how Pascal, prevention officer in Liège, Belgium, sees his role. "My job is to reinforce safety and oversee the application of welfare-related measures", he explains. "Among other things, I am responsible for making sure risks are understood, explaining the rules to be observed and reassuring people about the effectiveness of safety measures". In 2020, the Covid-19 health crisis resulted in the introduction of new rules, rolled out throughout the Colas Group. "Individual countries have been responsible for adapting them to their own local context", observes Pascal. Armed with a check-list drawn up by Colas' Prevention Department in Belgium, the officer hit the road again after a few weeks' interruption. "When I arrive on site, I make sure everything complies: equipment, signs, questionnaires to be given out", he lists. "We resumed activities with smaller teams initially to facilitate dialogue and make it easier for employees to get on board with the new rules."