The occasional wind turbine workers and rooftop solar installers have been killed doing their work; in extremely small numbers but each turbine and rooftop only makes a minuscule quantity of energy.
Hydro is usually very safe, except that the dams can fail and wipe out entire cities. When Banqiao Dam failed, 26 thousand people died. If you want to talk about the "what if" dangers of nuclear, you have to accept that Hydro's "what if" scenarios are far, far, far more deadly.
Deaths per trillion kW hours
170,000 Coal
36,000 Oil
24,000 Biomass
4,000 Gas
1,400 Hydro
440 Solar (rooftop)
150 Wind
90 Nuclear
Source: http://onforb.es/1JpfxzR