5 economic papers that lit up our brains — and what they say about our confusing world

We at Planet Money are constantly reading the work of economists and other social scientists to glean ideas, evidence and insights about the economy, and, more generally, the confusing world around us. Often this work provides the seeds for episodes or newsletters. But sometimes they’re just interesting things we learned privately, and we don’t do much with them.

Well, today, we’re gonna try and change that. Welcome to the inaugural installment of the Planet Money Econ Roundup! Here are five recent papers that lit up our brains and are maybe worth taking a look at.

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by Michael Davies, R. Jisung Park, and Anna Stansbury

These economists analyze data from California worker compensation claims between 2000 and 2019, and they look to see if there is any effect of increasing the minimum wage on workplace injuries. They find one. And a rather large one. “We find that a 10% increase in the minimum wage increases the injury rate by 11% in an occupation-metro area labor market which is fully exposed to the minimum wage increase.” That’s right, when the minimum wage goes up, so do workplace injuries. Yikes. But why? Davies, Park, and Stansbury find that these workplace injuries reflect “cumulative physical strain, suggesting that employers respond to minimum wage increases by intensifying the pace of work, which in turn increases injury risk.” This paper’s findings are pretty shocking, and we will be looking down the road to see if other economists can replicate them. Link to paper

by David J. Deming, Christopher Ong, and Lawrence H. Summers 

Obviously, there is a big fear right now that artificial intelligence will kill a bunch of jobs. We don’t know what’s going to happen. But we can maybe learn from the past.

However, since 2017, the economists find, we’ve started seeing an uptick in occupational change.

First, they find that high-paid employment has grown while low- and middle-paid employment has declined as a percentage of total workforce. Maybe good news?

Second, and related to the previous finding, the economists find that “employment growth has stalled in low-paid service jobs.”

by Claudia Goldin

Countries around the world have seen a jaw-dropping decline in fertility rates. In this paper, Claudia Goldin, the 2023 winner of the Nobel Prize in economic sciences, offers a new theory to help explain why (listen to The Indicator’s conversation with her back in 2021). Goldin starts by providing a good summary of the economics literature on this subject, which points to reasons like the advent of birth control pills and contraceptives. Goldin adds another factor into the mix to explain why some countries have seen a more precipitous decline in birth rates and others have only seen slower declines: the speed of economic growth.

Goldin hypothesizes that countries that experienced rapid economic growth in the 1960s and 1970s — like Greece, Italy, Japan, Korea, Portugal, and Spain — saw bigger and faster declines in fertility because of the way rapid economic growth catapulted them into modernity and upset traditional gender roles. Basically, women go into the workforce, and that changes their desires to have lots of kids because now they’re more focused on their careers. And that change especially creates conflict between the genders in societies that just previously were more agricultural and had old-fashioned gender roles.

“Rapid economic growth has given women greater freedoms,” Goldin writes. “But rapid economic change may lead to conflicts of various types when men are more swayed by traditions. What women require of men’s time to raise a family and be members of a modern labor market may exceed the time their more tradition-bound spouses, or future spouses, are willing to offer. Household and caring tasks in such societies are largely women’s responsibilities.”

In societies that experience more slow and steady economic growth, Goldin suggests, this change is less sudden and men and women can more slowly work out a deal where they share more of the child-rearing responsibilities. That may help keep the fertility rate from falling as much. Link to paper

by Katie Bollman, Benjamin Hansen, Edward A. Rubin & Garrett O. Stanford

This group of economists look at how a ballot initiative in Oregon for more gun control affected demand for guns in the state. They find that the ballot initiative, Measure 114, led many Oregonians to buy guns and ammo like crazy. “Background checks, a proxy for demand, rose 13.9% in anticipation of the referendum and surged 157% immediately following the election,” the economists write. “After judicial intervention halted the law’s enactment, demand returned near pre-election levels.” The economists conclude that their study “underscores the paradoxical effect of gun-control policies, offering a cautionary lesson to policymakers.” Link to paper

by Priti Kalsi and Zachary Ward

These economists look at wealth dynamics of the richest of the rich Americans during the late 19th and early 20th centuries. They find that the richest of the rich tend to drop in wealth rankings, so they don’t stay at the top. However, they do find a relationship between their wealth and the likelihood that their grandkids are in the top 1%. Having a “rich grandparent exponentially increases the likelihood of reaching the top 1%. Still, over 90% of the grandchildren of top 1% wealth grandfathers did not achieve that level.” In other words, having super rich grandparents boosts the likelihood that you’re super rich, but it’s no guarantee. Link to paper

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