Is mentioning different subjects in the lede necessary?
I think you made a good point with the 'contribution' made by each of these subjects to the area of OHS or OSH. Work & Organizational psych has as much, if not more relevance, as far as 'weighting' or 'contribution' goes in comparison to each subject in the lede. It was deleted only recently? Plenty of reliable sources for work & org psych and its contribution to OHS, (and increasing), justifying its inclusion, that is, if we were to keep this line in the lede at all. What stays in, what goes out in that sentence, if it was kept in article? Thoughts?