“…In particular related to flight attendants' workload (defined as difference between demand of the task and capacity available in worker, Gopher & Donchin, 1986), it is important to provide optimal workload since under load leads to boredom and long-term heavy workload can affect an employee's physical or mental health, performance, or productivity including service quality, accidents or illness (see Chen et al, 2010;Davidson, Guilding, & Timo, 2006 for examples). However, as far as acknowledged by authors, only a limited study has been concerned with identifying the activities a flight attendant performs as well as the workload.…”