The hardships of life as a brick kiln worker in Pakistan
17 December 2012 Last updated at 16:32 GMT
Many Pakistanis work all day in dangerous conditions making and firing bricks in kilns for as little as 200 rupees ($2; £1.30) per day.
Despite government assurances that laws are in place to guarantee worker pay and conditions, labourers say that the realities of life at the kilns suggest otherwise.
BBC Urdu's Shahzad Malik reports.