Ageing process may mean working longer

A recent poll in Europe showed that due to better medicine, working conditions, diet and education people are living longer. This seems as a good thing but the poll also showed less people having kids. According to the article this could create a problem for the future work force. As the present workforce continues to get older and less people having kids, replacements could be an issue. One argument was to allow people to work longer and maybe even pass their pension plans. But the majority of people do not even work until their pension plan, which is 65 yrs old. Also, if there is a younger worker shortage who will pay for the older workers pension? How will European companies fix their potential worker shortage? Will they require their older workers to work longer? How will they draw in the younger workforce?