> OTOH, if you don't have any work history worth
> mentioning, it may be too early to apply for a WHV, and if you stay with
> one employer for a significantly longer period of time than 3 months,
> you might lose your visa (but then, maybe, nothing will happen - ESID).

Lots of people go and work at places like Nova for the full 18 months of 
the visa... there is no enforcment of that rule.