http://www.worksafe.govt.nz/notify-worksafe/
The Notify WorkSafe Now Tool pretty much works a person through the process by answering questions and tells you if an incident is not notifiable or continues and completes the notification process. I find it a really good tool. There is also detailed factsheet on the WorkSafe notification page.

I think parliamentarians probably enjoy putting on a hiviz makes them feel they are actually working and part of the workforce.

Why weren't they shown that the correct way to use a hiviz is to have it done up?

When I first pondered this question I thought yes tobacco companies should help dairy owners with security measures, ethically anyway. I think the smart thing to do would be to only allow tobacco sales via vending machines in outside locations similar to ATMs. Dairy owners could still charge companies rent and power to have them attached to their store. The driving force for this change would probably need to be the government through regulation.
When I thought a little deeper for other products that can have negative impacts I couldn't easily think of many manufacturers that take much interest in the effects their products have on retailers or end users. Their are requirements for manufacturers to design plant and equipment to be safe in HSaW but does this pertain to the safety of those in the middle of the supply chain? For example do the manufacturers of aerosol spray cans do much to ensure their product is used as intended and not used for getting high on? The only thing I believe they do is possibly help with lockable display cases which I think is a regulatory requirement. Do gun manufacturers do anything to stop break ins of gun retailers?
Is it time for WorkSafe to consider a prosecution of a dairy owner for failing to take reasonable practicable steps to protect workers from harm by removing some of the risk of robbery by removing tobacco from sale in their premises? They took a case against Ministry of Social Development in Ashburton under the previous Health and safety Act.
It is time for the government to regulate the way tobacco can be sold.