unemployment and money wage rate

In the CFA book it says: “Unemployment above the natural rate puts downward pressure on the money wage rate.” Can someone please explain why this is?

The way I see it, there is a line (the money rate) that is above equilibrium and there is far more supply than demand. If they lower the wage rate, that will decrease supply and increase demand and if you lower the rate enough, it’ll bring the market back to equilibrium…

Also, with many people out of work, their willingness to accept a lower wage increases as these people will all be competing for jobs. If the supply of labor increases (the amount of people looking for work), and you hold everything else constant, the wage has to come down.