Could it possibly have something to do with how many sick days are allowed for in the different CEA's?
I'm guessing QF might have 10 and def J* would only have 5, so it's people using their entitlements as provided....
My company allows 90days continuous, resettable to 0 when you return to work. No one takes advantage of it, we still need to provide medical certificates for 3 days or more, but it's helped a few guys who've had medical issues that have taken a few months to resolve. If it takes more than 3mths to sort out, an admin day is rostered to reset the 90day clock....