Prisons and mass incarceration Originally, Western's research pertained to organized labor, but he became interested in researching prisons and
mass incarceration, in his words, "almost by accident" after talking to a colleague about the United States' use of prisons to manage disadvantaged populations. In a 2010 study, Western and fellow sociologist
Becky Pettit outlined the way in which, according to them, poverty increases prison populations and these populations in turn increase poverty. Other studies co-authored by Pettit and Western have found that on average, incarceration reduces annual salaries by about 40% for the average male former prisoner, and reduces hourly wages by, on average, 11% and annual employment by nine weeks. In 2009, with Devah Pager and Naomi Sugie, he found African American job applicants with a criminal record were less likely to receive a call back after an interview than white applicants with a criminal record. As of 2013, Western was studying what happens to prisoners after they are released, and has interviewed the subjects of the study in person, which has, according to Elizabeth Gudrais, "put a human face on the statistics and dashed preconceived notions in the process." In 2015, he published a study based on these interviews, showing that 40% of the recently incarcerated prisoners he interviewed in the
Boston area had witnessed a killing when they were children. Another finding of his research on these released prisoners was that most of them immediately return to poverty upon their release.
Unions He has also researched the relationship between the decline of unions and increasing income inequality, and has found that the former accounted for a third of the increase in income inequality among male workers. ==Honors and awards==