Columbia subject headings:
Harvard subject headings:
Employee morale.
Employees--Mental health.
Employees--Workload.
Industrial psychiatry.
Job stress.
Mental fatigue.
Psychology, Industrial.
Work--Psychological aspects
Princeton subject headings:
Employees--Mental health.
Employees--Workload.
Industrial psychiatry.
Job stress.
Mental fatigue.
Psychology, Industrial.
Work--Psychological aspects.