Hi Chizzy
It has been a feature of technological development over many centuries that people have predicted doom and gloom in terms of employment prospects (for many disciplines).
But that doom and gloom has repeatedly failed to materialise and actually the demand for specialist skills and knowledge has continued to expand.
The need for occupational health and safety professionals is likely to be inversely proportionate to the competence of an organisation in preventing occupational ill health and injuries.
So, if all the workforce are upskilled in health and safety from Board level down to the shopfloor, then you should need less occupational health and safety professionals, but new challenges always turn up to mean that line managers are rarely up to date.
Now, I wrote "occupational ill health" before "injuries" as where the stats are recorded we know that the negative impacts of not effectively managing health and safety are MUCH more in terms of the personal and socio-economic costs of ill health than on accidents.
One of the issues that follows is where those costs fall in terms of the relationship between e.g. Governments and the organisations who create the risks and the subsequent costs.
If the organisations do not have to pay a proportionate amount of the costs of occupational ill health, then they may not adequately focus on the occupational health risks, leaving it to Governments, heathcare agencies and individuals to bear the burden of the costs.
In turn that means that the demand for occupational health and safety professionals may depend signficantly on the regulatory regime in any geography along with "stakeholder" influences e.g. the attitude of shareholders, customers and others.
For example, if a UK purchaser of clothes from a supplier in a developing nation says that it will not tolerate workers being exposed to high levels of respirable and inhalable levels of cotton dust, then a manufacturer in a developing nation may be under much greater pressure to manage risks, which might not result in ill health until months, years or decades after their worker has left their employment.
In turn that UK purchaser's decisions may be impacted by the attitudes of its customers. I can choose not to buy from suppliers who do not influence better workplace standards and increasingly consumers do precisely this.