This literature review represents the first deliverable as part of a feasibility study on Managing Shiftwork in European ATM (MSEA) to define with stakeholders common solutions and/or adaptations that will facilitate the planning and management of flexible working practices (with a focus on shiftwork) to improve safety and productivity/efficiency in ATM. The document summarises available research results on employee health and social requirements, safety, performance, and productivity/efficiency for shiftwork environments.