What happens to wages, employment, and GDP if employers must pay higher taxes for hiring labor?

Question

What happens to wages, employment, and GDP if employers must pay higher taxes for hiring labor?

Answer 1

The wages go down because the employers will look to undercut that by hiring undocumented workers.

Answer 2

It will have "fall of demand" for labor effect - thus leading to dead-weight loss on labor market. Consequently equilibrium wage and quantity o labor will be reduced - thus wages and employment will decrease.

Since there are less labor employed GDP will be reduced too.