Without fail and irrespective of harsh weather, the dabbawalas every morning pick up lunch boxes (dabbas) from the homes of Mumbai's office workers and deliver these at their workplaces.

After lunch, they again pick up the empty boxes from offices and carry them back to the homes of the customers.

'Without any technological backup and logistical support, the dabbawalas perform with utmost precision. This organisation is the only one in India and the second in the world who had got six-sigma rating', said Aggarwal.

Dabbawalas earned the rating from Forbes Magazine in 1998, for their unprecedented record of only one error in 6 million transactions.