A sweeping new analysis spanning six decades and nearly 70 countries confirms what many workers already feel: the gap between the wealthy and everyone else determines how much time people spend on the job.
The findings reveal that growing economic disparities consistently predict longer work hours across diverse societies, from industrialized Western nations to rapidly developing economies in Asia.
The research published in Social Psychological and Personality Science examined 2,798 country-years of data from 1960 to 2019, tracking changes in income inequality using the Gini index, a standard measure where zero represents perfect equality and higher numbers indicate greater disparity.
The results were striking: for every one-tenth increase in a country’s Gini index, workers logged an additional 60 hours annually, effectively adding more than a full week to their yearly workload.
Why inequality drives work hours up
The connection between economic inequality and longer work weeks stems from what researchers call relative deprivation, a psychological response to perceiving oneself as disadvantaged compared to others.
When income gaps widen, people at lower economic levels feel compelled to work more hours in an attempt to close the distance. The phenomenon creates a cascading effect throughout society as individuals compete for limited economic advancement opportunities.
The research team, led by psychologists Wenxuan Liu, Nicolas Sommet, and Hongfei Du, conducted three separate studies to test competing theories. One hypothesis suggested that growing inequality might trigger learned helplessness, causing disadvantaged groups to work less after concluding economic advancement was impossible.
The data, however, consistently supported the opposite pattern. Rising inequality motivated people, particularly those facing existing disadvantages, to increase their labor.
Unequal impacts across demographic groups
A longitudinal study tracking 33,083 Americans from 1968 to 2021 revealed that income inequality affects different groups with varying intensity. When state-level inequality increased by one-tenth on the Gini scale, workers logged approximately 53 additional hours per year. However, this burden fell disproportionately on specific populations.
Low-income Americans responded most dramatically to rising inequality by extending their work hours. Black Americans increased their working time significantly more than White Americans facing identical economic conditions. Women also worked longer hours as inequality rose, while men showed a slight decrease in work time.
These patterns align with historical patterns of economic vulnerability, where groups already facing systemic disadvantages feel greater pressure to compensate through additional labor when resource distribution becomes more unequal.
Perception versus reality in different contexts
The study’s examination of China between 2012 and 2020, involving 26,251 participants, introduced an additional dimension: the role of perceived versus actual inequality. Workers’ beliefs about economic disparity proved to be powerful predictors of behavior. When participants perceived inequality as worsening, they increased their work hours by roughly 10 hours annually for each unit increase on a ten-point scale, regardless of their economic status or geographic location.
Objective measures of provincial inequality in China, however, showed a more complex picture. Only workers with urban hukou, a household registration status conferring greater access to social services and economic opportunities, responded to rising provincial inequality by working longer. Those with rural hukou showed no such response to official inequality measures, suggesting that formal economic disparities may affect behavior differently depending on one’s position within existing social structures.
The global nature of these findings suggests that the relationship between inequality and work hours transcends specific cultural or economic systems. Whether in established market economies or rapidly developing nations, widening income gaps consistently predict that people will spend more time working. The research team noted that their work contributes to understanding the psychological consequences of inequality and how people allocate time between work and other life areas.
These findings carry implications for both policy and workplace practices. As income inequality has nearly doubled globally since 1980, the pressure to work longer hours has intensified across populations. The research suggests that addressing work-life balance and labor standards may require confronting the underlying issue of economic inequality itself, rather than treating extended work hours as an isolated problem.
The data reveal a self-reinforcing cycle: inequality drives longer work hours, which may further entrench existing disparities as disadvantaged groups sacrifice personal time, health, and family relationships in pursuit of economic survival. Breaking this pattern likely requires interventions at multiple levels, from progressive taxation policies to labor protections that prevent excessive working hours from becoming the expected norm.
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