The informal sector plays an important role in economic development of developing countries by creating employment to their large population. Studies of the informal sector workers from many countries around the word, particularly in the developing countries, find that there have been a rapidly increasing number of informal sector workers. The “informal sector” is understood to imply the use of labour-intensive working methods, with most of the workforce being self-employed. According to International Labour Organization (ILO) informal sector workers in industrially developing countries are exposed to poor working environments, low safety and health standards, and environmental hazards. Such exposure impairs their health and productivity as well as the general well-being and quality of life of the informal workers and their families. But often they are not even aware of the risks they face and, if they are, they do not know how to avoid them.