"This lunch delivery service, subject of management studies in the US, has been cited as a model of entrepreneurship and supply chain management at the grass-roots level," the Commerce Department noted announcing his schedule.

Dabbawalas' fame is well earned. Harvard Business School has produced a case study on the exciting story of the 4,500 semi-literate Dabbawalas collecting and delivering over 175,000 food packages within hours with an error free record.

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The business school urges its students to learn from the organization's unique, simple and highly efficient 120-year-old logistics system, which relies entirely on human endeavour and doesn't employ any technology.

Conducting an analysis, Forbes Global magazine also gave the Dabbawalas a Six Sigma rating of 99.999999 per cent of efficiency in 1988 where they made only one error in six million transactions.