Workload of air control staff and pilots - Skybrary publication-Eurocontrol

With performance schemes in place, Air Navigation Service Providers are under
pressure to do more with less, to accommodate more traffic demand whilst
maintaining current levels of safety, to be more efficient and at the same time
not allow the workload to reach unsafe levels. This publication managed by
Eurocontrol focuses on changes impacting on workload to air control staff and
pilots and the issues around work organisation in these professions.

More info - Source: European Agency for Safety and Health at Work