Yes. In fact, OnBoard can not only use personnel data from Peoplesoft, but from virtually any HR system. This is key since OnBoard requires a current list of workers. In most cases, the HR system is the source for the most accurate data on each employee.
Many of our clients transfer an employee listing to OnBoard on a nightly or weekly basis so that OnBoard can work with a current list of employees. This transfer can be scheduled to recur without the need for manual intervention.