Who is responsible for a student's work-based training in apprenticeships? Is it my RTO or is it the employer?

The RTO and employer are both responsible for ensuring students have access to applicable job tasks, resources and supervision while undertaking on-the-job training as well as off-the-job training.

Ultimately, the off-the-job training component of an apprenticeship is negotiated as part of the training contract between employer and apprentice/trainee and is registered and regulated by the appropriate training authority in your state or territory.