No paper work is protection for front line work at height. Paperwork and Competency training only protects the PCBU from court prosecution. if you wish to protect workers, their risk tolerance and supervision risk tolerance is the margin between safe or dead. plain language messaging would be
IF YOU FALL YOU GET HURT OR DIE

I like your numbers Andrew, Shall we suggest to the minister to amortise the social costs across all vehicles and apply this as a tax then give this as a subsidy to all us walkers. unintended consequences?

Unsafe acts
Unsafe conditions
Pretty much covers everything

I did a risk assessment and decided that it for 'all travel to & from and during work' is to ban all vehicles with a steering wheel.

This is taking the approach of work as designed. Safety is about work as done. Using S.O.P's for training puts everyone to sleep. Use your supervisors to assess and train for competency

Adopt the title of 'Health & Safety Advisor' instead of 'Health & Safety Manager'

To quote the act:
Duties of workers
While at work, a worker must—

(a) Take reasonable care for his or her own health and safety; and

(b) Take reasonable care that his or her acts or omissions do not adversely affect the health and safety of other persons; and

(c) Comply, as far as the worker is reasonably able, with any reasonable instruction that is given by the PCBU to allow the PCBU to comply with this Act or regulations; and

(d) Co-operate with any reasonable policy or procedure of the PCBU relating to health or safety at the workplace that has been notified to workers.

Therefore under section B. A yes/no question like 'Are you impaired by Fatigue, Alcohol or other drugs' would suffice.
Don't waste your money on testing. It doesn't improve worksite safety. Just look at statistical injury trends over the last 10 years. Mandatory drug testing in many workplaces and we still can't reduce injuries and deaths. Your better to spend time & effort in upskilling supervisors

I'll remind you all. Eliminate, Substitute, Administrate. I choose Eliminate. Remove the cars!

I'm a backer of this idea. Try the approach of "H&S is in everything we do" its not a department in its own silo.
A focus on general workplace and productivity improvement is your chance to implement safe work.

This is one prepared from large scale construction site rules

Good discussion on Whakatāne District Council drug testing or impairment testing
Here.
https://www.rnz.co.nz/news/national/429477/whakatane-district-council-to-begin-random-drug-testing

Try Nationals election manifesto. Free to download.

Reading the above gives me the view that H&S is treated as a silo division of all other business function. Has anyone thought how reporting can be part of other business functions like booking to time codes. Say time is booked to a project against codes that divide time to productive, unproductive, safety incident, injured e.t.c. then your management system can pull the data out to a dashboard. Just an idea.

What is the clause that has led everyone down the path of random testing?

That's encouraging. Why don't we hear about appropriate impairment tests more. Is any organisation doing work in this space?

Why are we so concerned with usage testing over impairment testing?

My hypothetical approach is: Make your own considered judgement. We have been in Isolation for 28 Day's and haven't contracted the virus. therefore we are safe for a return to work with our workmates. maintain physical distancing where possible. Strict physical distancing around interactions with others not in our work bubble. Trust the workers to avoid possible exposure outside of work.

I like your answer

How do you measure and display the value of H&S strategy?

I have a hypothetical question. If someone contracts a virus at work is it in breach of the HSAW act?