The informal sector is characterized by excessive seasonality of employment especially in farm sector, preponderance of casual and contractual employment, absence of social security measures and welfare legislations, negation of social standards and worker rights, denial of minimum wages and so on. Poor human capital base in terms of education, skill and training as well as lower mobilization status of the work force further add to vulnerability and weaken the bargaining strength of workers in the informal sector.The alarming expansion of informal sector in recent times has adversely affected employment and income security of larger majority of workforce, along with reduction in the scale of social welfare /security programmes. The central government introduced the various social security programmes. However, these legislatives programmes have not been able to protect the rights of these workers. The percentage of all workers covered under any security provision decreased from 32.6 percent in 1999-2000 to 28.6 percent and 26.4 percent in 2009-10.It has decreased due to increasing informalisation of worker force in India.