South Australia it depends on the Award (like a default contract for a particular kind of work, it sets minimum conditions)

But at a bare minimum, if you're working at a shift of 4 hours or more, you're required to be given a 15 minute paid tea break.

If you're working 5 hours or more, Add a 30 minute unpaid lunch/dinner break.(*minimum, 1 hour max if scheduled - max as otherwise it's really just split shifts)

ruins a society

Good thing we don't have one of those.

This is similar in California. Tho to clarify, this is a 30 minute break that is unpaid.

Is that not what’s happening here? 5 or more hours you get a 30 minute break

The breaks worked similarly when I worked hourly shifts in the US:

• <= 6 hrs: 1x 15m paid break
• > 6 hrs: 1x 30m unpaid lunch, 2x 15m paid breaks

It was most common to be scheduled for 6 hr shifts so the company could avoid paying for the extra break.