Hi Strine,
I have recently been assessed by VETASSESS under OHS and below is an excerpt from their letter. Hope this helps answer your question
"This occupation requires a qualification which is assessed as comparable to the educational level of an Australian Qualifications Framework (AQF) Bachelor degree or higher degree, in a field highly relevant to the nominated occupation. In addition to this, applicants must have at least one year of post-qualification employment at an appropriate skill level completed in the last five years which is highly relevant to the nominated occupation. If the qualification(s) are not at the required educational level, or if the employment has been completed prior to the qualification, then the employment will be assessed below the required skill level"