Which sociologist/industrial relations theorist is credited with developing the Unitary, Pluralist, and Radical (Marxist) frames of reference to analyze industrial relations and organizational conflict?

In industrial relations literature, Alan Fox (1966, 1973) formulated the seminal "Frames of Reference" framework to categorize managerial perspectives toward conflict, authority, and trade unionism within organizations. British sociologist Alan Fox introduced the Unitary and Pluralist perspectives in his landmark 1966 research paper for the Donovan Commission, later adding the Radical (Marxist) perspective in 1973. His model explains how managers view employment relationships and workplace conflict: Unitary: Sees the organization as an integrated, harmonious team with a single source of authority and shared objectives; views conflict as dysfunctional or caused by agitators. Pluralist: Views the organization as a coalition of diverse groups with competing interests and legitimate differences; sees conflict as normal and manageable through collective bargaining. Radical/Marxist: Views workplace relations as a manifestation of broader class struggle and capital-labor inequality inherent in capitalist economies.