Between 20-50% of the overall duration of apprenticeship
The duration of on-the-job training is a subject to regulations at different levels. Each Region may decide on the minimum and maximum duration (out of 19 Regions and 2 Autonomous Provinces, only a few Regions have actually done so). In addition, it can be further regulated by collective agreements. Examples: for the "Degree" sub-typology, Emilia-Romagna considers 120 hours; for the "Master", Piedmont sets 1,100 hours while Emilia-Romagna sets between 100 and 400 hours; for the "PhD", Emilia-Romagna sets only 48 hours.
There is a distinction between work and training during in-company training. For the hours during the in-company training, the employee is paid a 10% salary (unless collective agreement provisions state otherwise).