On Thursday Hostess Brands Inc. warned striking employees that it will move to liquidate the company if they don't return to work that evening.
This will result in the loss of about 18,000 jobs.
Hostess, based in Irving, Texas, reached a contract agreement with its largest union, the International Brotherhood of Teamsters.
But thousands of members in its second biggest union, the Bakery, Confectionery, Tobacco Workers and Grain Millers International Union, went on strike last week to protest cuts to wages and benefits under a new contract offer.
The privately held food maker filed for Chapter 11 protection in January.