Can Singapore's labor crunch spark a robot revolution?

By Aradhana Aravindan and Marius Zaharia SINGAPORE (Reuters) - Sherine Toh says her best days at work are when none of the 600-or-so staff at Singapore's Tung Lok Restaurants quits, though such days are rare. The Chinese restaurant group is one of the thousands of businesses struggling with a labor crunch caused by foreign worker curbs, that threaten the city-state's already feeble growth rates. The city's restaurants, hotels and retailers have become the biggest casualties of the labor crunch s