OJT is training provided while participants remain in the workplace and involves performing the actual work to be done on the job. In traditional on-the-job training, a new employee's co-worker or supervisor explains and demonstrates procedures and observes while the new employee performs the procedures. OJT is efficient because it can be done while the new employee is actually producing work for the company. Its one-on-one nature forces the new employee to take active role in learning and enables the trainer to observe the level of the employee's learning and take action immediately to correct problem.