I have said to many people looking at ads for various operators who seem to place rather high minimums, but it is their train set, they can run it the way they want to.
But without looking too deep, their Ops Specs or Exposition will require pilots to have a minimum amount of experience to operate for the operator, there isn't any point employing or advertising for anyone with less than what their Exposition state.
Yes the hours are flexible in the off chance you get the perfect potential employee, who may be a bit short in one area, but they are so rare and hard to find that it has only happened once here.
Most operators do employ people by conducting more than a glance of the CV or application form and those who fake hours stand out like dogs balls.