Beyond headcounts: Decomposing health workforce availability in Mexico, 2005– 2024
This study utilizes Mexican survey data from 2005 to 2024 to demonstrate that traditional employment-based health workforce metrics overlook significant latent supply and labor market absorption failures, revealing that true workforce availability requires decomposing trained professionals across employed, unemployed, and non-health sectors to effectively address shortages.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
Every society relies on a steady stream of skilled workers to keep its hospitals and clinics running. These professionals, from doctors to nurses, are the human engine of health care, consuming the largest share of health budgets and directly determining how well a population stays healthy. For decades, governments and international organizations have tried to solve the problem of too few workers by simply counting how many people are currently on the job. This method assumes that if a country has a shortage, the answer is to train more people. However, this approach overlooks a crucial reality: the number of people holding a medical degree is not the same as the number of people actually using that degree to care for patients. Many trained professionals find themselves working in completely different fields, or they are unemployed and waiting for a chance to work in their field. Understanding the full picture requires looking beyond the hospital walls to see where these trained individuals actually are, and why they might not be in the places they were trained to serve.
A team of researchers set out to map this hidden landscape in Mexico, examining two decades of data from 2005 to 2024. Instead of relying on official hospital records, which only count people currently employed in health care, the team turned to a massive national survey that asks working-age citizens about their jobs, their education, and whether they are looking for work. By analyzing this data, they could separate the total number of trained nurses and doctors into three distinct groups: those working in health care, those working in other industries, and those who are unemployed but actively seeking a job in health. This method revealed a much more complex story than the simple headcounts suggested, showing that the challenge is not just about how many people are trained, but how well the economy absorbs them into the right roles.
The study found that the total number of trained nurses in Mexico grew significantly over the twenty-year period, rising from about 3 per 1,000 people in 2005 to more than 5 per 1,000 in 2024. However, the distribution of these nurses tells a different story. While the number of nurses working in health care did increase, a large and growing portion of them—more than doubling in number—found employment in sectors unrelated to health. In 2005, roughly one in four trained nurses worked outside the health system; by 2024, that figure had risen to more than one in four, with the rate of nurses working in other fields jumping by 117 percent. This means that a significant share of the nation's nursing investment is not going toward patient care. The researchers also noted that the nursing workforce itself was changing, becoming more educated with a shift from technical diplomas to bachelor's degrees, and becoming slightly less female-dominated, though women still make up the vast majority.
The situation for physicians showed a different pattern. The total number of trained doctors grew more slowly, increasing by about 25 percent over the same period. Unlike nurses, the proportion of doctors working outside the health sector remained relatively stable, hovering between 15 and 18 percent of the total trained workforce throughout the two decades. The number of unemployed doctors was consistently very low, suggesting that once a doctor is trained, they almost always find work, even if it is not in a hospital. The workforce also saw a notable shift in gender, with the share of female doctors rising from about 31 percent to nearly 46 percent. Despite these changes, the overall density of doctors remained modest compared to the rapid expansion seen in nursing.
A key finding of the research is that the people driving these changes are often the ones struggling to find work in their field. The study observed that younger graduates and certain demographic groups were disproportionately represented among those working outside health care or remaining unemployed. This suggests that the problem is not a lack of training capacity, but rather a failure in the labor market to match new graduates with available positions in the health system. The researchers point out that when a country trains a professional but that person ends up working as a teacher, an administrator, or in a completely different industry, it represents a waste of public and private investment. The social return on that education is only partially realized because the skills are not being applied to health care.
The authors argue that relying solely on the number of people currently employed in hospitals gives a misleading picture of a country's health workforce capacity. It hides the "reserve" of trained professionals who are available but not currently working in health, and it masks the "leakage" of talent into other sectors. To fix workforce shortages, the paper suggests that policymakers must look at both the supply of trained workers and the demand for their skills. Simply opening more medical schools or nursing programs will not solve the problem if the health system cannot create enough jobs to absorb the new graduates. Instead, effective planning requires understanding where trained professionals are actually working, why they are not in health care, and how to improve the transition from education to employment. The study concludes that without addressing these labor market dynamics, expanding education alone will not close the gap between the need for health services and the availability of skilled workers to provide them.
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