Some 328 companies in Poland have been declared bankrupt this year, marking a 9% increase compared with the first four months of 2012, Radio Poland reported. According to data compiled by insurance company Euler Hermes, some 88 firms went under in April alone, leaving about 4200 employees in the lurch. The number of bankruptcies has risen most markedly in industry, the wholesale trade and the services sector, it said. Meanwhile, the construction industry continues to struggle.