Casual labourers are the ones who do not have a permanent work. Their work is irregular and consists of a series of jobs. They are paid on a day-to-day basis, depending on the work they have done on that particular day. They do not have any security, neither in terms of income nor permanence of their job. For example, the labourers, who wait for the employers to give them a job for a day like carpenters, masons and their helpers; those who dig at construction sites, lift bricks to load or unload, dig for pipelines or cables and those who whitewash houses.