I think you'd need a better baseline than the general population too, workers in the same/similar industry, similar pay and probably most importantly similar jo

I think you'd need a better baseline than the general population too, workers in the same/similar industry, similar pay and probably most importantly similar job stability. The suicide rate before the privatization would probably be best. I would assume these employees are more skilled than average, perhaps better paid than average and previously had great job security. From there I'd assume that their suicide rate was and should be well below the national average.