While Industry 4.0 affects production lines and machines, it is also a challenge for operators. With the happening of modern plants, the increase in automation and robotization, their environment has become more and more complex, and they must adapt fast. To keep working efficiently, not only they need new skills and tools and so they need to be trained, but also solutions to improve their decision-making processes. With the ability of virtual technologies to provide 1:1 scale virtual machines that you can interact with, it is possible to be trained as if being in a real plant, interacting with real machines. Decision makers can visualize and analyze every step of an operation and improve them without having to go through the whole physical prototype making process. Thus virtual reality appears to be the adequate solution to improve field operators efficiency.