I left HU in June 2012. At that time I had a 70% parttime contract which guaranteed me 14 days off per month in Europe plus 3 commuting days.
The reason I quit was that I just had enough. But the contract was good.
One of my friends just renewed his 50% parttime job ( 21 days on 40 days off).
Rare as they are these contracts exist and are honoured by HU