Thousands of Amazon Flex drivers have filed arbitration claims against Amazon, alleging they were misclassified as independent contractors instead of employees. This misclassification, they argue, has led to unpaid wages, overtime, and reimbursement for work-related expenses such as mileage and cellphone use. The claims were submitted to the American Arbitration Association on June 11, with approximately 15,800 drivers involved, including 15,750 drivers from California, Illinois, and Massachusetts. The drivers are seeking compensation for these alleged losses.