IRS employees will get furlough notices on Monday

She said discussions are ongoing about how to lessened the blow of the unpaid days for IRS employers. 

The five furlough days when the agency will be shut down are: May 24, June 14, July 5, July 22 and Aug. 30. 

"On these days, phones calls to the IRS will go unanswered and Taxpayer Assistance Centers across the country will have ‘closed’ signs in their windows,” Kelley said.

“I believe this is an unprecedented event that leaves taxpayers out in the cold.”

The furloughs are being driven by the $85 billion sequester that is requiring federal agencies to find savings in their budgets. 

“It is clear that the best course for federal employees, their agencies and the nation would be for Congress to end the sequester,” Kelley said.

The Obama administration has said it wants to replace the across-the-board automatic spending cuts but have been unable to reach an agreement with lawmakers on how to replace those costs.