Braverman's key contribution is his "deskilling" thesis. Braverman argued that capitalist owners and managers were incessantly driven to deskill the labor force to lower production costs and ensure higher productivity. Deskilled labour is cheap and above all easy to control due to the workers lack of direct engagement in the production process. In turn work becomes intellectually or emotionally unfulfilling; the lack of capitalist reliance on human skill reduces the need of employers to reward workers in anything but a minimal economic way.
Braverman's contribution to the sociology of work and industry (i.e., industrial sociology) has been important and his theories of the labor process continue to inform teaching and research. Braverman's thesis has however been contested, notably by Andrew Freidman in his work "Industry and Labour" (1977). In it, Freidman suggests that whilst the direct control of labour is beneficial for the capitalist under certain circumstances, a degree of 'responsible autonomy' can be granted to unionised or 'core' workers, in order to harness their skill under controlled conditions. Also, Richard Edwards showed in 1979 that although hierarchy in organisations has remained constant, additional forms of control (such as technical control via email monitoring, call monitoring; bureaucratic control via procedures for leave, sickness etc) has been added to gain the interests of the capitalist class versus the workers.
OB Is the observation and study of the behaviour of the people working in the organization...it is also the science of observing and studying the behavioural aspects of the employee to improve the productivity of an organization