PennySaver has filed for chapter 7 bankruptcy, a week after it shut down and in the wake of lawsuits claiming nearly 700 workers were abruptly laid off without notice or final pay, the Orange County (Calif.) Register reported yesterday. A bankruptcy judge in Delaware on Friday granted a lawyer representing the company and several of its affiliates a 14-day extension to file a list of assets and liabilities. The chapter 7 petition filed by PennySaver, based in Brea, Calif., lists debts between $10 million and $50 million against the same range in assets.