Unionized intracity bus workers in Seoul said Wednesday they will go on a general strike on Jan. 13, as their wage hike negotiations with the management have shown little sign of progress. The intracity bus union said the decision to strike was reached at a meeting of chapter representatives in the morning. The management has offered to increase hourly wages by 10 percent. But the union has rejected the proposal, saying it effectively amounts to a wage cut in consideration of recent rulings by the Supreme Court and a court of appeals that regular bonuses should be added to an employee's base pay to calculate their ordinary wages. Generally, increases in ordinary wages translate into higher amounts of various allowances for employees. The union has argued that the wage increases should be 12.85 percent, including unpaid allowances calculated based on the new ordinary wage standards. The union has also filed a criminal complaint against the management over the unpaid allowances. The Seoul city government said its annual expenses will be increased by 150 billion won ($103 million) a year if t