While you cannot file solely on unemployment, you can use any source of household income to make a plan feasible. Since unemployment runs out, you cannot show the court that you will be able to complete a 36-60 month repayment plan. You can use spouse's income, government assistance like social security, pensions, contributions from family, rental income etc. to show enough income to fund a chapter 13 plan. You can file individually, and still use the others income in your budget. But, you must show enough income to make a case work (not relying on unemployment).