Keep in mind that the way it works now with many investments, especially in the manufacturing sector, is that contracts or licences are used, or a networked economy is established. For example, how many shoe manufacturing plants does a company like Nike have? None. It uses subcontractors, which are the ones not adhering to labour conditions, health and safety rules for workers, and environmental standards.
There are ways for companies to avoid investing directly in these types of countries but to do business there, and when problems are flagged, the suppliers get the blame. In Canada, think of Joe Fresh. It does exactly the same thing. Makers of cheap goods are operating that way more and more.
The government could decide to punish the companies here, but ultimately, they aren't the ones making the goods. They deal more with designing and importing the goods, so it's pretty tough to say how those companies should be punished.
I agree with my fellow witness's suggestion to prohibit investment in certain sectors. I think that could be achieved through framework legislation. An example here, in Canada, is the Caisse de dépôt et placement du Québec, which was ordered to divest from the fossil fuel sector. That's not easy, given that 30% of Canada's economy is energy-based. These are companies listed on the Toronto Stock Exchange. How do you do that? If you sell off everything, it could cause the market to crash. You are also stuck with your old investments. What do you do? Do you sell them all off?
All of those business considerations come into play. Obviously, it's important to do things on a case‑by‑case basis, or at least to have broad enough measures to allow for sanctions, but it will be pretty difficult to implement, beyond the talk.