About 2.45 million people are expected to use the Incheon airport, about 50 kilometers west of Seoul, during this year's unusually long Chuseok holiday that lasts seven days starting Friday, according to Incheon International Airport Corp. (IIAC). The average daily passenger count will be 223,000, an increase of 11.5 percent compared with last year's Chuseok holiday, it noted. In principle, airport security screening workers are prohibited from participating in strikes under the current law. But they are determined not to work overtime until the Oct. 11-12 weekend, including the busy Chuseok holiday, effectively creating a strike effect. Meanwhile, unionized workers at 15 airports nationwide, including the Incheon airport, staged their indefinite strikes for the second consecutive day Thursday.