UNIONDALE - Some public-sector employees in Nassau were demoted today as part of the county's cost-cutting plan ahead of tomorrow's expected layoffs. More than 80 people were demoted at the Department of Social Services (DSS) alone, and tomorrow, at least 100 DSS employees are expected to be handed pink slips. In all, more than 300 Nassau employees will lose their jobs. Some people who came to the DSS building in Uniondale say the offices are grossly understaffed and chaos reigns inside. "There are more people applying for assistance while there's not enough people to help them," says Simone Foss, of Uniondale. A spokesperson for the DSS says under no circumstances are there any emergency cases being turned away for assistance.Meanwhile, union officials say about 92 county workers have agreed to accept an early retirement incentive that will give them $1,000 for every year of service.Clock ticking in showdown between Exec. Mangano, unionsNIFA approves Nassau's 2012 budget Exec. Mangano demands union concessions, threatens layoffs