The Great Recession brought a major slowdown in worker mobility in the U.S. But there is one group--a bit understudied--that remains willing to move to whatever job market offers them the best return for their labor: recent immigrants. Economists Brian Cadena , of the University of Colorado, and Brian Kovak , of Carnegie-Mellon, have been studying worker mobility, and find Mexican-born workers, in particular, "shifting systematically toward cities with milder downturn,"(between 2006 and 2010). From Vox : For college-educated workers, we see considerable mobility in the expected direction for all demographic groups. In contrast, we find that among those with no more than a high school degree, only foreign-born populations move in substantial numbers to stronger labour markets. Further, responsive mobility among immigrants appears to be driven almost entirely by the Mexican-born. For this group, a percentage point larger (smaller) decline in employment leads to a 0.75 percentage point smaller (larger) growth rate in the Mexican-born population of a city. Figure 1 shows the stark contrast in this relationship for less skilled native-born and Mexican-born men. Each circle represents a city; the x-axis measures the local change in employment from 2006 to 2010, and the y-axis measures the population growth rate over the same period. The figure clearly shows that the native population responds very little to changes in employment, while the Mexican-born respond markedly. This difference in responsiveness between natives and Mexicans is quite robust. In the paper, we rule out various alternative explanations for the geographic shifts in population, including the possibility that this movement was the continuation of an ongoing diffusion away from traditional immigrant enclaves, or that migration was driven by local anti-immigrant policies (e.g. SB 1070 in Arizona). We also find that this redistribution was not already happening prior to the recession, and we use two separate instrumental variables strategies to address the possibility of reverse causality. In the end, we conclude that the population response among Mexican-born individuals was caused by geographic variation in the depth of the recession. Immigrants’ willingness to relocate to stronger labour markets will, on average, improve their employment outcomes. Moreover, we show that their mobility also has a side effect – it tends to reduce the variation of labour-market outcomes for native workers, who mostly remain in their initial location. As Mexican-born workers left cities with the largest employment declines, they reduced competition for job vacancies among remaining workers, which improved the likelihood that those workers found employment. Similarly, as Mexicans arrived in stronger labour markets, they increased competition and reduced the employment probability for similarly skilled natives. Thus, Mexican mobility partially equalised differences in natives’ experiences of the Great Recession across cities. Read Immigrants reduce geographic inequality here .