Building trades Construction industry 17 Employees 11 History 8 Construction workers 7 Labor unions 6 Building 5 more ... Vocational guidance 5 Estimates 4 Housing 4 Management 4 Wages 4 Building materials 3 Salaries, etc 3 Affirmative action programs 2 Agriculture 2 Architecture, Domestic 2 Carpentry 2 Costs 2 Discrimination in employment 2 Employment 2 Equipment and supplies 2 Labor time 2 Minorities 2 Minority business enterprises 2 Race discrimination 2 Social conditions 2 Working class 2 Alienation (Social psychology) 1 Apprentices 1 less ...