If we have a condition where employment is lead by the wages does it mean that a wage reduction will cause unemployment?
Are you referring to real life circumstances or in a hypothetical world? There is an interesting article about the correlation between wages and unemployment found here: https://www.stlouisfed.org/On-The-Economy/2014/December/Are-Wages-and-the-Unemployment-Rate-Correlated
Essentially this article states that higher levels of wages are weakly correlated with the unemployment rate based on data that was compiled and published in The Regional Economist. They also argue that when business conditions shift, it impacts both the unemployment rate and wages.