The Czech labour authorities caught more foreigners than Czechs working illegally for the first time ever last year, iDnes.cz reported on Wednesday. While 1,338 non-nationals were uncovered working off the books in 2016, the number of Czechs was 758. The previous year the figures were the other way around, iDnes said. The highest number of undocumented foreign employees came from Ukraine, Vietnam, Slovakia and Moldova. Fines totalling CZK 71 million were imposed on employers using illegal workers last year.