"I'm less hesitant than ever to leave a job," said Brandon Holland, one of the millions quitting for better pay, conditions, and career prospects.
A company that runs a Chick-fil-A and other concessions said it needed to hire at least 38 workers, but only two people applied.
Pandemic relief money offered workers who were squeezed by low wages and poor working conditions a chance to finally catch their breath.
The owner of a dog-walking company in Atlanta, Georgia, said she got, on average, four new enquiries a day, "and we have to turn all of them away."
The childcare industry could be key to the country's economic recovery - if it had enough workers to staff it.
Colleges, like others, are in need of more workers. Michigan State University is asking faculty and staff to come help out at the dining halls.
Part of easing the labor shortage is having affordable homes and jobs in the same location. The economic recovery is a chance to fight both problems.
"As much as I cared and loved the children whose care was entrusted to me, I just couldn't do it anymore," one worker who left childcare said.
Restaurants have been changing their operations because they can't find enough staff to operate as usual as labor keeps getting more expensive.
The restaurant industry is in crisis as some businesses close dining rooms without enough workers.
Sherri Ybarra says some Idaho schools have already closed from shortages of substitute teachers and other school staff. She's asking parents to help.
Four Hooters workers told Insider that the shorts were more revealing than what they agreed to wear when they were hired.
Millions of unemployed US workers have more money coming in than they did at a previous job, according to JPMorgan's findings.
Some retail and restaurant workers say abusive customers are one of the main reasons they quit retail work - and they don't want to return.
Currently, under 16s can work until 9 p.m. in summer and until 7 p.m. the rest of the year. The bill hasn't been approved by the Wisconsin Assembly.
Wichita Airport said Alaska was cutting two flights from Wichita, Kansas, to Seattle, Washington, each week in December "due to labor shortages."
Hiring is slow, the labor shortage rages on, and Americans are quitting at a record pace, but Yellen expects unemployment to keep dropping.