NEW YORK (AP) — Some Instacart and Amazon warehouse workers walked off the job Monday demanding greater safeguards against the coronavirus, even as both companies are speed-hiring hundreds of thousands of new workers to handle a surge in delivery orders.

The one-day strikes had little impact on consumers, but the unrest called attention to mounting discontent among low-wage workers who are on the front lines of the pandemic, serving the needs of those who can keep safe working from home. Whole Worker, a workers group for Whole Foods employees, is calling for a nationwide “sick out” on Wednesday.

Many workers in high demand are part-time or contracted employees, lacking in benefits such as paid sick time off or health care. In addition to demands for more protection against coronavirus, workers are citing longstanding grievances over practices that keep wages low and part-time workers from getting more hours.

Online grocery-delivery service Instacart and Amazon say they are working to equip their workers with sanitation gear and have taken steps to increase pay and extend paid sick time. Instacart said Sunday that it would make hand sanitizer available to its workers upon request and outlined changes to its tip system, but strikers said it was too little too late.

“They need to give us hazard pay right now and it should be guaranteed,” said Shanna Foster, a single mother who stopped working her Instacart gig two weeks ago out of fear of contracting the virus. “It wasn’t worth the risk.”

But a rush of hiring is likely to dilute any attempts by existing workers to organize walk-offs. Many people are applying for the new jobs as layoffs surge in restaurants, retail, hospitality, airports and other industries that have shut down. Nearly 3.3 million Americans applied for unemployment benefits last week, almost five times the previous record set in 1982.

While many Instacart workers said they would stop taking orders Monday, other, newer workers were reluctant to give up a source of income at a time of mass layoffs.

“I’m grateful to have some way to make money,” said Summer Cooper, 39, who started working as an Instacart shopper in the Tampa Bay, Florida, area recently after losing her position as a server at a hotel restaurant.