The world is experiencing a baby bust, with declining birth rates and an aging population. The conventional wisdom is that this will lead to economic stagnation, but new research challenges this notion. In fact, the opposite might be true. The Baby Busts and Growth Booms report, distributed by the National Bureau of Economic Research, reveals that lower birth rates are associated with higher GDP growth per working-age adult and higher wage growth across US commuting zones. This finding contradicts the widely held belief that these trends hinder economic growth. Instead, it suggests a more nuanced relationship between fertility rates and economic performance.
The report's authors argue that the observed patterns are not driven by factors such as higher education levels, increased female labor force participation, or the transition from agriculture to manufacturing. Instead, they attribute these trends to the labor-saving response of technology to the scarcity of younger workers. Countries with lower birth rates, they find, correlate with more patents and high-tech activity, indicating a shift towards innovation and productivity.
The impact of lower fertility rates extends beyond economic growth. The worldwide total fertility rate has dropped from 5.3 in the 1960s to 2.2 in 2024, with the US at 1.6, well below the replacement level fertility (RLF) of 2.1. This decline in population growth is expected to slow over the next 30 years, with the Congressional Budget Office (CBO) projecting a shift towards net immigration as a source of population growth. However, the authors caution that these demographic changes may also bring institutional and policy changes, potentially offsetting the negative effects of aging and population decline.
One significant concern is Social Security. With fewer younger workers and a growing retiree population, the Social Security retirement trust fund is projected to run out by 2032, leading to a 24% reduction in benefits unless immediate action is taken. This highlights the need for individuals to secure their retirement savings through various means, such as employer-sponsored plans, individual retirement accounts, and diverse investment strategies. While having more babies is not a solution, the report suggests that declining birth rates may have positive economic implications, including higher total factor productivity, larger capital stocks, and a shift towards exports in high-tech industries.
However, the article also acknowledges the potential challenges, such as the high costs of childcare, which can impact women's career trajectories and Social Security benefits. It emphasizes the importance of financial planning and diversified retirement strategies to navigate the uncertainties surrounding Social Security. The report's findings challenge the conventional wisdom, suggesting that the baby bust may not be the economic disaster it was once assumed to be, and that a more nuanced understanding of the relationship between fertility rates and economic performance is necessary.
