Employment (1) Terms and phrases (1) Methods (1) Surveys (1) Terms and phrases (1) Indexes (1) Plumbing fixtures (1) World health (1) Time (1) Stress (Physiology) (1) Respect (1) Public health (1) Plumbing--Equipment and supplies (1) Neurasthenia (1) Industrial hygiene (1) Impact (1) Mental fatigue (1) Economics (1) Burn out (Psychology) (1) Absenteeism (Labor) (1) Methods (1) Cover versions (1) Influence (1) Evolution (1) Population (1) Names (1) Occupations (1) Labor productivity (1) Job stress (1) Infancy (1)