If the debt is not monetized, some borrowers will be crowded out if interest rates rise. This results in the federal deficit having more of an impact on output and employment than on the price level. A third reason involves the cost-push theory which states that labor groups cause inflation. If a strong union wins a large wage contract, it forces producers to raise their prices in order to compensate for the increase in salaries they have to pay. The fourth explanation is the wage-price spiral which states that no single group is to blame for inflation.
Higher prices force workers to ask for higher wages.
If they get their way, then producers try to recover with higher prices. Basically, if either side tries to increase its position with a larger price hike, the rate of inflation continues to rise. Finally, another reason for inflation is excessive monetary growth. When any extra money is created, it will increase some group's buying power. When this money is spent, it will cause a demand-pull effect that drives up prices.