Unorganised Sector Ramesh C Datta Neglect of social opportunities due to lack of adequate progress in social security, has been detrimental to the economic and social development of India. In order to remedy this situation, it has been argued that public action can play a central role in ensuring expansion and monitoring of social security. This paper, focusing on mathadi labour market in Mumbai, presents the case of unionisation of mathadi workers as a case of public action enabling these manual workers in unorganised sector to achieve protective social security benefits.