A new employee was being trained on how to seal and stack 50 lb bags. During this time the employee's left forearm and wrist became sore. On 9-30-2018 the employee reported that the employee's forearm/wrist area was swollen and it was hard to close the employee's hand. On 10-01-2018 the employee saw a physician and was diagnosed with possible tendinitis and put on restrictive duty.