Labor unions Social aspects Economic aspects 5 History 5 Labor movement 4 Employment 3 Music 3 more ... Women 3 African American musicians 2 African Americans 2 Bureaucracy 2 History and criticism 2 Industrial relations 2 Interpersonal relations and culture 2 Intimacy (Psychology) 2 Management 2 Music and race 2 Music trade 2 Musicians 2 Political activity 2 Popular music 2 Women employees 2 Work 2 Baseball 1 Baseball players 1 Clothing trade 1 Clothing workers 1 Collective bargaining 1 Commerce 1 Economic development 1 less ...