He previously worked for The Wall Street Journal, FiveThirtyEight, and is currently an economics reporter for The New York Times.
[3] He was a finalist for the 2011 Pulitzer Prize for National Reporting and shared a Gerald Loeb Award for Large Newspapers for covering the Deepwater Horizon oil spill.
[4] In 2013, Casselman joined FiveThirtyEight as the chief economics writer and senior editor.
[1][7] He was nominated for a Gerald Loeb Award for Beat Reporting in 2021 for his work on the COVID-19 pandemic's impact on the American economy.
[10] He is an adjunct professor at the Craig Newmark Graduate School of Journalism at the City University of New York, where he teaches economic reporting.