Unionized Seoul bus drivers said Wednesday that they were planning to strike over pay starting Thursday, with an overwhelming majority of union members supporting the plan. The Seoul Bus Labor Union, which has nearly 18,133 members across 61 companies, voted Tuesday on a plan to strike at 4 a.m. Thursday. According to the union, 16,317 members participated in the vote, and 16,046 of them voted in favor of the strike..