If your employer collapses, a trustee or administrator or liquidator will be appointed to manage the company. That trustee/administrator/liquidator will be required to pay your superannuation out of company funds.
If the company doesn’t have enough funds, in some cases company directors will be required to pay your superannuation. If the directors still don’t pay, the Australian Securities & Investment Commission (ASIC) might take legal action on your behalf. However, ASIC might decline to take legal action or might be unsuccessful.
So there might be some circumstances when you don’t receive all the superannuation you’re owed.