A labourer works at the construction site of a residential complex in Kolkata December 21, 2013. India’s biggest cities face a worsening shortage of migrant manual labourers. While India has long suffered from a dearth of workers with vocational skills like plumbers and electricians, efforts to alleviate poverty in poor, rural areas have helped stifle what was once a flood of cheap, unskilled labour from India’s poorest states. Struggling to cope with soaring food prices, this dwindling supply of migrant workers are demanding – and increasingly getting – rapid increases in pay and benefits. Picture taken December 21, 2013. To match INDIA-ECONOMY/INFLATION REUTERS/Rupak De Chowdhuri (INDIA – Tags: BUSINESS CONSTRUCTION EMPLOYMENT) – RTX16UK9