An old couple walk in Xiangfan, Central China's Hubei province on Oct 6, 2013. [Photo/CFP]

It would be risky to believe an online post that called on workers to deposit 500 yuan ($82) per month instead of paying into their pension, a social security official said. The online post said workers can get about 3,376 yuan in bank interest every month after retirement if they continue depositing 500 yuan a month for 30 years.

Huang Xianfeng, a spokesman for Shenzhen city's human resources and social security bureau, said the online post did not take into account inflation factors, Shenzhen Economic Daily reported.