Why do women favour working in the public sector?

Research carried out by Birkbeck’s Dr Pedro Gomes and Professor Zoë Kuehn from the Universidad Autónoma de Madrid aims to understand why women self-select to the public sector.

The public sector is a large employer, accounting for between 10 and 35 percent of total employment in OECD countries. In most countries, the public sector hires disproportionately more women than men. With my colleague Zoë Kuehn, I developed a model to try and understand this imbalance.

Through the lens of our model, we view the gender bias in public employment as driven by supply, meaning that it is not the government that acts explicitly to hire more women, but it is women that choose the public sector more so than men. Our objective was to better understand this selection, in particular, how much of it is explained by public sector job characteristics that are related to management, organization and human resource practices in the public sector.

We documented gender differences in employment, transition probabilities, hours, and wages in the public and private sector using microdata for the United States, the United Kingdom, France, and Spain. We then built a search and matching model where men and women could decide whether to participate and whether to enter private or public sector labor markets. Running counterfactual experiments, we quantified whether the selection of women into the public sector was driven by: (i) lower gender wage gaps and thus relatively higher wages for women in the public sector, (ii) possibilities of better conciliation of work and family life for public sector workers, (iii) greater job security in the public compared to the private sector, or (iv) intrinsic preferences for public sector occupations.

A natural explanation for the gender bias in public employment could be that certain types of jobs that are predominantly carried out by the government could be preferred by women. However, our research revealed that, for the US, the UK, and France, once we exclude health care and education, women’s public employment is still 20-50% higher than men’s. Interestingly enough, the gender bias is less pronounced within public health care and public education compared to other branches of public employment.

Regarding transition probabilities, we estimated that the probability of moving from employment to inactivity is higher for women, but we found this probability to be significantly lower for public sector workers.

We also provided evidence that gender wage gaps and working hours are lower in the public sector. Individuals holding full time jobs in the public sector work between 3-5% fewer hours compared to similar individuals holding full time jobs in the private sector. However, fewer working hours are just one aspect of a better work-life balance (next to additional sick days, holidays, flexibility to work from home, employer provided child care etc.). In our model we wanted to capture differences in work-life balance across sectors in an ample sense, and hence we do not use these estimates to identify any parameters. Nevertheless, our results on fewer working hours in the public sector support the claim of a better work-life balance in the public compared to the private sector.

The results of our research suggest that women’s preferences explain 20 percent of the gender bias in France, 45 percent in Spain, 80 percent in the US, and 95 percent in the UK. The remaining bias is explained by differences in public and private sector characteristics, in particular relatively higher wages for female public sector workers that explain around 30 percent in the US and Spain and 50 percent in France. Only for France and Spain do we find work-life balance to be an important driver that explains 20 to 30 percent of the gender bias. Higher job security in the public sector actually reduces the gender bias because it is valued more by men than by women.

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