Gotta love the whole arm chair researchers, "correlation is not causality." They probably learned that in Statistics 101. You often hear that from people who have a rudimentary understanding of research.
Anyway, posting a research study without including the actual article is disingenuous, to say the least (no offense, PM). I am sure in the conclusion section, the researchers address the limitations of their study and I can almost guarantee that the researchers never stated they found a causal link between suicide and wage. All peer-reviewed articles are required to include the limitations in their study, which this one most likely did. But, of course, that will not be gleaned if one ONLY posts the results and not the WHOLE article. That is often the problem when sites post research articles--they ONLY cite the results and not the WHOLE damn study. If you read the whole study, it will put the results in context.