The correct term used is Job Shadowing, or, Shadowing Program. This training program is literally designed as a way for an inexperienced new worker, who wishes to learn the ropes of a job fast, to do so and with the least use of resources from the company. In fact, many companies use this method of training because it helps them to achieve their main goals with a new trainee. First, it saves on training costs, as the new person will be under the supervision and care of a more experienced worker. And second, it allows the trainee to get first-hand, train on the field experience under the guidance of someone who is already being paid, so this means less costs in recruiting trainers for companies.
