The political pandering aside - this could also be a tacit attempt to keep many of the elderly in the work force and to delay their Social Security recipiency? It has been shown that the elderly respond to such incentives aimed at individual retirement and Social Security decisions (i.e. the "Delayed Retirement Credit" (Pingle 2006)). While I do not disagree with the authors opposition to tax credits to a constituency that already appears over served in the realm of government expenditures but I would be interested to see what the effects on the labor might be if it were to be implemented.