I saw the growth of the HR, Training, Safety, QA, and multi-levels of management at Bristow over the years.....and only in rare cases did that growth not be at the direct increase in overhead costs with no appreciable gain in productivitiy or margin.
Sometimes there is a need for adding some non-revenue Staff....but that has to be both proven and then very carefully measured and controlled.
CHC went down that Rabbit Hole very quickly.....too many folks with their finger in the pie contributing nothing but more cost and no revenue or cost savings.
Same at Bristow.