Yes, and when I said there are labour shortages, that's something that is well documented. There are not that many ways to solve such a situation. Tapping into under-represented groups, you mentioned one, namely indigenous people, and there are older workers, disabled persons and the immigrant population are the obvious ways to address labour shortages.
You mentioned unemployment being at record lows. That's true. Also, the employment rate is not at record highs but it's quite high, and higher than in the United States. That's the share of the population of working age that has a job. That suggests there is not that much slack in the labour force, which leads to labour shortages.
There is room to do better, especially for under-represented groups that still have employment rates below the average and unemployment rates above the average. There is indeed room for improvement in this area.