Niki is an austrian company, owned by Air Berlin. No idea what the rules are in Austria, but there is probably no money left.
Same with Air Berlin actually. The company still operates 13 A320 until the end of the year, those that fly those still get their salary, the rest don’t although they are technically still employed while serving their (due to the bankruptcy reduced) three month notice period. All flight deck personnel, wether still flying (those based in STR, CGN, HAM) or not, did get their pink slip and will be out of Air Berlin by march. In theory everyone will get two months severance pay if there is any money left, and the salary that is currently not paid. Not gonna happen, as now the government will gobble up all the money that doesn’t go to the lawyers to recoup their bridging loan.