The government says its motor registration division was alerted in January that someone's personal information may have been inappropriately accessed by an employee.
Service NL conducted an investigation and says an employee had accessed the personal information of 16 other people for non-work-related purposes.
The department is also reviewing another 11 possible privacy breach cases.
The government says the 17 affected people have been notified and offered new driver's licence identification.
Spokeswoman Vanessa Colman-Sadd would not say if the employee still works for Service NL, saying it is their policy not to release such information.