"Prince George's County Executive Parris N. Glendening said yesterday that recent reductions in state aid are likely to force him to break his pledge against further layoffs of government employees.</br></br>""The action of the state has produced conditions so severe that promises made just a matter of a couple of months ago are now difficult, if not impossible, to honor,"" Glendening said.</br></br>Glendening, who already has laid off 200 employees and eliminated almost 800 positions to help balance the county's $980 million budget, added that he is considering other options, including expanding a furlough program to include employees who previously were exempt, asking employees to postpone cost-of-living raises again and laying off employees who work for programs that could be eliminated or severely scaled back.</br></br>Two weeks ago, in announcing his plan to furlough half the county's work force for two weeks to help trim $27.5 million from the county budget, Glendening (D) had promised to avoid further layoffs. He declined yesterday to say how many workers may lose their jobs in a new round of layoffs, but said that employees are likely to bear the brunt of additional cuts in his budget.</br></br>Glendening's remarks about possible future layoffs came less than a week after the General Assembly cut aid to localities across the state, including an additional $10 million each from Prince George's and Montgomery counties."