What valid health concerns are those?
The only concern of any kind I've ever seen raised is autism, which is based on a report that failed to show a causal link, had too small a sample size, and was thoroughly debunked by peer review. It is not a valid concern.
And if only MS had a similar "never break userspace" rule that applied to even the most unbelievably "casual" of software too.
You mean the same Microsoft that named their next OS version Windows 10 because Windows 9 would break a number of applications that checked OS version with string comparison on the name rather than by the actual version number?
We could finally have the glorious final showdown involving JarJar that everybody has been waiting for since he first showed his annoying face in episode 1.
Hostel 3: meesa gonna die now.
Because it doesn't take very long, and the chef is likely to still be working there in 2 years.
In software engineering, the average time you can reasonably expect someone to stay working for you, regardless of salary or conditions/perks, is about 2~ years. Much less in startup hotbeds like SF.
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And that is why everyone's hunting down pre-trained people. Of course, then you have to weight that with the cost of not hiring anyone at all, and decide whats best.
That's largely of the tech industry's own doing.
It is well-known amongst programmers (and anyone else who cares) that the only way to be paid the prevailing wage is to job hop. Employers refuse to give regular raises to keep their coders in step with market salaries. Furthermore, employers do not invest in their employees - training must be done on a person's own dime and their own time. In a worst case, the tools and technologies used in a workplace will stagnate, causing people to leave just so they're not left behind in the industry as a whole.
This would quickly change if the tech industry executives put more effort into retaining good people and less time into screwing them.
"Go to Heaven for the climate, Hell for the company." -- Mark Twain