Thai Prime Minister Yingluck Shinawatra (1st L) shakes hands with workers when she arrives to attend a Labour Day celebration in Bangkok, capital of Thailand, May 1, 2013. (Xinhua/Rachen Sageamsak)
Thai Prime Minister Yingluck Shinawatra (1st R) attends a Labour Day celebration in Bangkok, capital of Thailand, May 1, 2013. (Xinhua/Rachen Sageamsak)