Well sandrews, it is quite simple really.
First of all, you must look at the three economic indicators and how they relate to wage growth. Wage growth is key in looking at inflation because inflation basically controls wage growth. Through the increase or decrease in taxes and the amount of money in circulation through the economy, a steady increase of about 3% is a must in consistent wage growth .
However, deflation is also a major factor. Deflation causes GDP and unemployment to rise. Therefore the economy is in a state of financial well being/not well being. This deflation causes GDP and unemployment to shrink actually.
The next factor is wage growth itself. Wage growth is basically money that is being paid to the federal government and actually the president himself. So with inflation rising, through GDP, unemployment and the presidents paycheck, wage growth will increase or decrease.
I hope this answers your question. And that is why wage growth is connected to the rate of inflation and the current economic standpoint in the modern era.