Across industries, 4.54 million Americans quit or changed jobs in March, the highest level since December 2000, according to seasonally adjusted data released May 3 by the Bureau of Labor Statistics.

The count is up from 4.38 million in February. In the healthcare and social assistance sector, 542,000 Americans left their jobs in March, compared to 561,000 the previous month, according to the bureau.

The number of job openings in the U.S. also hit a record high of 11.55 million in March, up from 11.34 million in February, according to the bureau. Job openings in the healthcare and social assistance sector remained similar in February and March, at around 2 million.

During the pandemic, hospital CEOs are among those who have joined the list of workers quitting. Additionally, older, tenured employees in America are part of the trend.

Although there continues to be churn in the labor market, Fitch Ratings projects the U.S. labor market will recover jobs lost during the pandemic by the end of August.