My company have been hiring young men/ladies with around 400 hrs and a fATPL for the last 6 years.
None of them had one single hour of jet time but they have all turned out well and the first batch are now moving into the left seat with no problem.
We never used to look at anyone with less than 3000 hours and what a huge mistake that was.
"We used to do it this way in DanAir/BA/PanAm/SABENA etc etc." What a pain in the arse that was!
These new boys and girls are very, very bright and an absolute pleasure to teach.