The Boston Globe reports that adjunct faculty — who make up the overwhelming majority of instructors on America’s college campuses — are suffering because of the pandemic.

While many tenure-track professors received pandemic-related extensions for their research, many adjuncts simply watched their jobs evaporate. While some professors may teach from home, adjuncts lucky enough to have courses often feel pressure to come to campus — even though their jobs rarely come with health insurance.

“They’re kind of like the Uber drivers,” said Gary Rhoades, who studies higher education at the University of Arizona. “COVID just heightens and surfaces the already existing inequities.”