formation (1) spectacle (1) comportement (1) projet (1) productivité (1) association (1) papier (1) gestion (1) littérature (1) travail (1) analyse (1) firme (1) science économique (1) coût (1) Development (1) Construction (1) Surveys (1) Training (1) Employees (1) Surveys (1) Social groups (1) Skilled labor (1) Reason (1) Performance (1) Paper (1) Management (1) Literature (1) Labor supply (1) Impact (1) Human capital (1)