The D.C. government has more than 500 job vacancies—and D.C. Mayor Muriel Bowser is pushing to fill them at a virtual career fair next week.

So many jobs are open in part because the city launched and expanded several government programs in this year’s budget—expansions that were made possible by a large influx in federal aid last year. On top of that, Bowser said, other openings were created because people left their jobs.

“We created more opportunities with a big infusion of investments in programs from our last budget season, and we also have openings for people who have moved on to different things,” said Bowser at a press conference on Thursday. “And we anticipate having even more opportunities as we go into the summer.”

The District is far from unique: Jobs openings have soared across the country. Experts say there are likely a number of factors contributing to the situation, including older workers deciding to retire early, and secondary earners who left the workforce because they had to take care of children during school closings. In addition, some people are taking advantage of the demand for workers to leave jobs where they have been chronically underpaid and seek out better pay and benefits elsewhere—especially as inflation and rising prices have raised their cost of living.

“A lot of people are moving around and a lot of companies are looking for great staff,” Bowser said Thursday.

To fill the hundreds of vacancies, the city will a virtual career fair on March 16 and March 17. The event, called “New Year, New Career,” is D.C.’s “largest ever virtual hiring fair,” according to a press release from D.C. Mayor Muriel Bowser.

Residents looking for jobs can speak with hiring managers during both days of the fair, and potentially take job interviews over the phone or video chat. And, according to Bowser, D.C. government agencies may offer people jobs on the spot.

The open jobs cross more than 20 D.C. government agencies—including the D.C. Public Library, the city’s health department, the Department of Corrections, D.C. Public Schools, and the Office of the Attorney General.

(Residents can register for both days of the fair online.)

Bowser also highlighted the expansion of several job training programs on Thursday, including new slots for residents at the city’s infrastructure academy and a new program that matches residents with career coaches.