The poll has been open a week and 50 people took part - thanks to all of you!
Support for industrial manslaughter is evenly split. Personally, I'm not yet persuaded a new law is necessary, for the reason suggested by @Drew Rae, and also because the HSW Act already contains ample provision for imprisonment. The courts so far have been reluctant to go anywhere near the maximum penalty provisions, but presumably Parliament put them there for a reason.

On marijuana, I can't see why its decriminalisation (should it ever happen) would have any effect on drug and alcohol policies. Alcohol is an extremely potent legal drug, and marijuana is a less potent illegal drug. Both are widely tested for already. Therefore what difference does it make if the item being tested for is legal or illegal? (Unless, of course, companies aren't really testing for impairment/safety, but for another agenda altogether.)