AH
Maybe ‘waiver’ was the wrong word.
The customer sets the minimum flying experience requirements for the crews they want on contract for their O&G flying - after all, they are paying.
Regardless of total hours there was a general minimum requirement of 500-hrs multi-engine for the co-Pilot.
Makes sense I suppose - the more the merrier?
There is the facility to accept 250-hrs ME but a program of Line Training and mitigation had to be in place to counter the lack of ME time. Not all operators are equal - some have training departments used to such programs, others do not.
It wasn’t often that this ‘facility’ was drawn upon but operators are now having to use every ‘trick’ in the book to attract suitable pilot material to fill the cockpits.