I order to file a creditor's claim concerning the bankruptcy of your employer, i suggest that you go online with the bankruptcy court's website and print out a creditor's claim. Fill it out as soon as possible as to the amount owed and file it with the bankruptcy court. You have a certain time period to do so. Request all amounts you claim due you.I suggest that you may want to consult with a bankruptcy attorney to assist you in this matter on the filing of the creditor's claim.