Back pay for federal contractors impacted by the recent partial government shutdown did not make it into a funding deal expected to be filed later Wednesday, a source told The Hill.

A Democratic source, asked if the provision made into the agreement, said "nothing extra was included [because] Republicans refused to do back pay."

In addition to back pay for contractors, an extension of the Violence Against Women Act (VAWA) is not expected to be included in the funding deal. The Senate is expected to vote first on Thursday on the agreement, according to a Senate source.

The fight over back pay for federal contractors moved into the spotlight earlier Wednesday when Democrats accused Republicans of refusing to include it in the bill. 

"Thousands of federal contractors have not been reimbursed from the 35-day shutdown. This issue is still hanging in the balance," Senate Minority Leader Charles SchumerCharles (Chuck) Ellis SchumerGOP Green New Deal stunt is a great deal for Democrats National emergency declaration — a legal fight Trump is likely to win House Judiciary Dems seek answers over Trump's national emergency declaration MORE (D-N.Y.) said from the Senate floor. "No one should stand in the way of that. It's just not fair to them. They were hostages."

A Democratic source familiar with the negotiations said Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellGOP Green New Deal stunt is a great deal for Democrats The national emergency will haunt Republicans come election season Trump: McConnell should keep Senate in session until nominees are approved MORE (R-Ky.) was objecting to including the back pay for contractors.

A spokesman for McConnell directed questions about the issue to the Office of Management and Budget. Sen. Roy BluntRoy Dean Blunt‘Contingency’ spending in 3B budget deal comes under fire GOP braces for Trump's emergency declaration The border deal: What made it in, what got left out MORE (R-Mo.), a member of GOP leadership, said he has been told President TrumpDonald John TrumpMcCabe says he was fired because he 'opened a case against' Trump McCabe: Trump said 'I don't care, I believe Putin' when confronted with US intel on North Korea McCabe: Trump talked to me about his election victory during 'bizarre' job interview MORE won’t sign it.

A source familiar with the legislation said the administrative cost for implementing the new back pay requirements would be almost as high as the pay out to contractors impacted by the partial government shutdown.

But outside groups and Democratic staffers expressed skepticism about the notion that implementing back pay for impacted contractors could cost hundreds of millions of dollars, pushing back on the claim.

A Democratic aide added that the back pay legislation, which was also introduced a stand-alone bill by Sen. Tina SmithTina Flint SmithContractor back pay not included in shutdown deal Push to include contractor back pay in funding deal hits GOP roadblock Dems seeking path to Senate majority zero-in on Sun Belt MORE (D-Minn.), would build on an administrative process that already exists for processing other claims from contractors.

Smith, in a statement on Wednesday night, pledged to keep working to get back pay for federal workers impacted by the 35-day government shutdown.

“According to recent reports, it seems they are left out in the cold, with no back pay. My legislation to right this wrong, which had bipartisan support, should have been included in the final budget deal, but I’m not done fighting to make this right, and I’ll keep on working to get it done," she said.