Overwork only directly kills you if there is workplace accident because you worked long hours and your attention slipped and you drove off the road/ machinery f

Overwork only directly kills you if there is workplace accident because you worked long hours and your attention slipped and you drove off the road/ machinery fell on you etc. Almost always overwork does not kill "directly", if your premise is alcohol and tobacco is not controlled, my question is then how much of alcohol or tobacco consumption is driven by overwork.