Accidents (4) Employment (3) Risk (3) Measurement (3) Rates (3) Occupations (3) Medición (3) Trabajo (3) Travail (3) Travail (3) Mesure (3) métrologie (3) travail (3) risque (2) produit (2) accident (2) Wounds and injuries (2) Employees (2) Wealth (2) Spring (2) Perception (2) Pain (2) Methods engineering (2) Working class (2) Farmhouses (2) Employment (Economic theory) (2) Average (2) Attention (2) Accidents (2) Age (2)