A local delivery agency operator is under investigation for allegedly hiring dozens of foreign nationals without proper work visas and registering them under the names of Korean citizens, the Seoul Immigration Office said Tuesday. The 31-year-old suspect is accused of employing 67 foreign delivery workers between May and January, collecting a 5.5 percent commission from their earnings while also charging each worker between 200,000 won ($134) and 250,000 won, according to the office’s special in