Although isn't this the overtime threshold - for which the company tries to limit you to - for obvious reasons. IIRC, it was recorded from 1 July to 30 Jun, so if you were only there for part of the year, there was no limit. I worked there for 15 months over 2 of these overtime years and the limit didn't apply to me, so I was working a 900 hour rolling limit. Nothing to do with fatigue management!