Just about every experimental science trainee experiences some variation on this theme: Their work entails a variety of risks in combination, they have little experience in dealing with those risks, and--much of the time--safety considerations take second place to getting the work done.
"Flooding the market with additional workers ... is going to make engineering even less attractive as a field than it already is. ... The smart ones will be even more likely to opt for a career in law, medicine, or management." --Tom Cross
“The glut of graduate students enticed by the growing support a few years ago have since found it difficult to get their own work funded … and the sudden deceleration in funding has left many researchers feeling slighted even though their funding grew by leaps and bounds in the past decade.” --Yuval Levin
The companies identified in the 2013 Science Careers Top Employers Survey ensure a higher return on those investments by catering to the whims of the scientist brain, which they view as their greatest economic driver.