The professionalization of management is a function of the stage of economic development, both of the enterprise and the economy in which it operates, for these stages influence the size, number, nature, and complexity of problems to which the enterprise is exposed. The nature of personnel problems, for example, are influenced by the relative maturation of the labour force in motivation, commitment and skill development, and management's responses to these problems evolve with the inducement of professionalism from the growing size, complexity, and diversity of industrial institutions. Compared to 1950, the labour force of Thailand in 1986 is more urban, better educated, more materially motivated, more ethnically uniform, and better disciplined to factory work. Hence, it should be more receptive to modern management practices. Yet, by American or Japanese standards, the Thai labour force is still comparatively primitive, and personnel are administered in a diverse milieu of work environments that condition the style and progress of management. As a consequence, the practice of management varies as widely in Thailand as it does in other developing countries between metropolitan and provincially located establishments, between large and small firms, among Thai, Thai-Chinese, Japanese, or Western firms.