A worker works while surrounded by unmanned sewing machines at the production line of a bag factory in Yiwu, Zhejiang province, February 15, 2011.China's booming coastal provinces are facing a labor shortage after the Lunar New Year holidays as the seemingly endless flow of migrant workers dries up. More and more workers in the traditional manufacturing belts in the Pearl River and Yangtze River deltas are staying back in their home villages in the countryside due to rapid urbanisation and economic development in China's interior.  [Photo/Agencies]

Recruiters hold up job advertisements for migrant labor at a job market in Yiwu, Zhejiang province, February 15, 2011. [Photo/Agencies]