The slight decrease in the percentage of average open-ended contract workers compared to the changes in the company scope during the year (as Medea and the waste management services branch of Hera S.p.A. were sold to Alea Ambiente in Forlì) and, above all, to the effects of compensating a large number of people retiring and the need to replace them with temporary workers place on consolidation paths aimed mainly at occupying operational positions in operations.