Due to a long-standing disagreement about compensation and contract modifications, administrative staff in Dunton, Stratford, Dagenham, Daventry, and Halewood will go on strike for 24 hours.
Instead of providing a permanent pay increase, the automaker has offered many office workers a one-time payment for 2024.
All employees will begin receiving performance-related compensation the following year.
Changes to the Unite collective bargaining agreement and sick pay policy are also being sought, the union stated, despite the fact that absenteeism is less than 2%.
Following the start of industrial action short of strikes on August 22, a 24-hour walkout is scheduled on October 30.