A recent study from Washington State University underscores this notion, revealing that European countries which embraced
The study, recently published in AEA Papers and Proceedings, analysed 20 years of data on H-1B visas—those coveted permits for immigrants with advanced degrees and specialised skills.
The research team’s choice to focus on EU countries was a strategic one, leveraging the shared labour market within this political and economic union for a more precise analysis of marriage equality’s effects. The EU also provided a natural experiment: by 2019, roughly half of the 27 member states had legalised same-sex marriage, while the remaining 14 had not, creating a perfect control group for comparison.
The results revealed that from 2000 to 2019, as 13 EU countries adopted same-sex marriage laws, the U.S. experienced a 21% decline in new H-1B visas from these countries. This trend persisted despite differences in enactment dates and economic conditions across the EU.
The study also considered the effect of the U.S. recognising foreign same-sex marriages in 2013. Notably, this policy change slowed the decrease in H-1B visa admissions from EU countries with existing marriage equality laws, such as The Netherlands, Belgium and Spain.
Koroles Awad, a Ph.D. candidate in economics at WSU, emphasised that
Awad further noted that marriage equality could act as a non-monetary incentive for attracting and retaining highly sought-after skilled workers, particularly in STEM fields.
Building on previous U.S. studies showing that same-sex couples and households led by women were more likely to relocate to states recognising same-sex marriage, this new research broadens the understanding of how inclusive policies affect migration patterns.
Although this study doesn’t address the sexual orientation of H-1B visa holders, it clearly indicates that the appeal of inclusive environments is a significant factor for skilled professionals.