The problem comes with trying to assess across the board in a sector if a labour shortage or working conditions is the main reason why you're having trouble attracting employees. There are a lot of factors that lead to trouble attracting employees in these sectors. Many of them are demographic--urbanization, education levels, fertility rates. There is a whole host of issues that go into interpreting that.
With respect to the foreign worker program, I see that this is being used to address those needs, and my concern would be to pay attention and regulate those areas, regulate the living and working conditions, in particular the working conditions for foreign workers in companies that have foreign workers, as compared with simply saying that we have to have a better way of assessing working conditions. My concern is that this would then lead to people just saying either that we either need to scrap it altogether or we can't use that meaningfully. I would like to see a more detailed evaluation of employers.