The National Time Transfer Accounts (NTAs) Manual provides a framework for studying the age dimension of economic activity and answering one of the most fundamental questions about how our societies work – how resources get to people who produce less than they consume because they are too young to produce enough or too old and facing lowered productivity through the ageing process or who want to retire. This work has revealed what the NTA framework refers to as the "generational economy" in many countries over many different periods, showing how people produce, consume, share, and save resources by age. In addition, it has yielded important practical and theoretical insights into how population change impacts individuals, economies, and economic policy.
