You need to take it one step further; you should compare it to the suicide rate of healthy, employed young adults. If (for example) the suicide rate is higher than employed adults, but comparable to unemployed, it would show a serious problem at the factory.
In many industrialized countries suicide rates are not spread equally across all demographic groups.
Then, "Foxconn CEO, Terry Gou, had large nets installed outside many of the buildings to catch falling bodies. The company hired counsellors and workers were made to sign pledges stating they would not attempt to kill themselves."
"In 2012, 150 workers gathered on a rooftop and threatened to jump. They were promised improvements and talked down by management; they had, essentially, wielded the threat of killing themselves as a bargaining tool. In 2016, a smaller group did it again. Just a month before we spoke, Xu says, seven or eight workers gathered on a rooftop and threatened to jump unless they were paid the wages they were due, which had apparently been withheld. Eventually, Xu says, Foxconn agreed to pay the wages and the workers were talked down."
"The body-catching nets are still there."
If you can't fit nets you should consider other methods - one multi-storey carpark in England closed the whole top floor.
https://www.gov.uk/government/publications/suicide-preventio...
Why do we put up with "oh, it's the same everywhere, so it's not a problem" when they are directly responsible for creating this environment?