“There are just a number of balls still in the air,” said Senator Ron Wyden, Democrat of Oregon, as he left Friday evening, adding that both sides “have some issues that are important priorities, and it takes some time to check.”

Democratic and Republican negotiators also seemed close to an agreement on Friday evening on providing expanded unemployment benefits for workers affected by the coronavirus — one of the major sticking points in the legislation — including those who are self-employed and people whose hours have been reduced as large parts of the economy shut down to slow the spread.

Democrats were prepared to drop their opposition to several large corporate tax cuts as part of the compromise. And Republicans were ready to agree to a direct payment that would apply equally to workers with incomes up to $75,000 per year before phasing out and ending altogether for those earning more than $99,000. The two sides were also working to reach an agreement on a proposal to allocate stabilization funds for states.

While there is widespread agreement on the need for the package, Republicans and Democrats began negotiations on Friday divided over the details of how to structure an unprecedented government rescue package. Negotiators were debating which Americans should receive direct payments from the government and how they should receive them, how much paid leave employers should have to cover for workers and what form of assistance to provide to small and large businesses.

“Senator McConnell’s bill is not pro-worker at all — it puts corporations ahead of people,” Senator Chuck Schumer of New York, the Democratic leader, said early in the day. “Democrats have a good plan that puts people and workers first.”