The duration of the training classes depends on the client they hire you for. Most range from 2 to 3 weeks in the classroom and typically include floor training. So in my work, people tell me that it takes about a year to master my tasks. In my last job, if you didn't have everything resolved in 2 weeks, you would probably get kicked out.
Very few new employees try their best and give their best right away. In fact, according to an article published in Training Industry Quarterly, it takes at least 1 or 2 years before an employee is “fully productive”. This means that even after an employee has been hired, they may not be as productive as the previous employee for 2 years. You'll lose potential value for months or years after your previous employee has left.
How long does the training last? The length of training depends on the skills required for the job. It usually does not exceed 6 months. By extending the onboarding time, you'll have the opportunity to incorporate more information into the onboarding process. A structured onboarding process that provides additional information and training to your employees during their first year can improve employee retention by 25 percent.