Re: Older employees up the average age, and thus the insurance cost for the whole company.
As an employer, I'd much rather pay the insurance for a seasoned veteran who will do the job right the first time than a wet behind the ears kid who'll cock it up and force me to pay the bills more than once!
I hire millennials as apprentices and interns at minimum to zero pay. They aren't worth more until they have street smarts ... and frankly, I won't invest in any company who does it differently. Hiring kids to make mistakes is throwing money away; I'm not operating a charity.