New Delhi, Aug. 16 -- A prolonged sales slowdown has plunged India, the world's fourth-largest automobile market, into a labour crisis with tens of thousands of workers losing their jobs in the past few months across automakers and their parts suppliers. Almost 40,000-50,000 workers have been retrenched at Gurugram and Manesar in Haryana, the country's biggest automotive hub, as original equipment manufacturers and vendors have reduced their contract labour force, said several people aware of the developments. The situation is also severe in the automotive hubs of Chakan in Pune and Chennai, the people said. With the slowdown showing little or no signs of bottoming out, hiring from local engineering colleges in the region has also taken a b...