China has a law that mandates children to care for their elderly parents
China enacted a law (effective July 2013) for adult children to visit and care for their elderly parents.
Official document in Chinese
News article in Chinese
Meng, M. & Hunt, K. (3 July 2013). New Chinese law: Visit your parents, CNN, http://edition.cnn.com/2013/07/02/world/asia/china-elderly-law/index.html (accessed on 18 August 2014)