The number of people of working age will also decline. From 2002 to 2011 the proportion of people of working age (15-64) in the population will be around 70 %, but by 2051 it is projected to fall to only 57 %.
此外，工作年齡人口比例也節節下降，民國九十一年至一百年之間，十五到六十四歲的工作年齡人口在百分之七十左右，到一百四十年將降到只剩百分之五十七。