Singapore recently passed a law requiring children to support their parents and China is considering doing the same.
Whether Hong Kong should follow suit is a question worth exploring.
For financial imperatives look set to force the community to face the issue of how best to contain the costs of taking care of the elderly.
At present, about 10 per cent of the population is over the age of 65 and this is expected to rise by several percentage points in the next few decades.
As life expectancy lengthens, more and more elderly people are also expected to require institutional care.
The options are clear. If tax rates stay constant, either a bigger portion of the budget will have to be used to fund elderly care at the expense of other priorities, or benefits will have to be cut or their scope limited.
In a society which is rooted in the Confucian value of filial piety, it seems natural that considerations be made to ensure ageing parents can draw on the support of their children before relying on the public coffers.