Chapter Six1 A PowerPoint  Tutorial to Accompany macroeconomics, 5th ed. N. Gregory Mankiw Mannig J. Simidian ® CHAPTER SIX Unemployment.

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Chapter Six1 A PowerPoint  Tutorial to Accompany macroeconomics, 5th ed. N. Gregory Mankiw Mannig J. Simidian ® CHAPTER SIX Unemployment

Chapter Six2 Using this notation, the rate of unemployment is U/L. Now, we’ll denote the rate of job separation as s. Let f denote the rate of job finding. Together these determine the rate of unemployment. The average rate of unemployment around which the economy fluctuates is called the natural rate of unemployment. The natural rate is the rate of unemployment toward which the economy gravitates in the long run. Let’s start with some fundamental equations that will build a model of labor-force dynamics that shows what determines the natural rate. L = E + U Labor force is composed of is composed of Number of Employed workers Number of Employed workers Number of Unemployed workers Number of Unemployed workers

Chapter Six3 f U = s E Number of people finding jobs Number of people finding jobs Number of people loosing jobs Number of people loosing jobs Steady-state unemployment rate From an earlier equation, we known that E = L – U, that is the number of employed equals the labor force minus the number of unemployed. If we substitute (L-U) for E in the steady-state condition, we find: f U = s (L – U) Then, divide both sides by L and to obtain: f U/L = s (1-U/L) Now solve for U/L for find : U/L = s / (s + f)

Chapter Six4 Any policy aimed at lowering the natural rate of unemployment must either reduce the rate of job separation or increase the rate of job finding. Similarly, any policy that affects the rate of job separation or job finding also changes the natural rate of unemployment.

Chapter Six5 The unemployment caused by the time it takes workers to search for a job is called frictional unemployment. Economists call a change in the composition of demand among industries or regions a sectoral shift. Because sectoral shifts are always occurring, and because it takes time for workers to change sectors, there is always frictional unemployment. In trying to reduce frictional unemployment, some policies inadvertently increase the amount of frictional unemployment. One such program is called unemployment insurance. In this program, workers can collect a fraction of their wages for a certain period after losing their job.

Chapter Six6 Wage rigidity is the failure of wages to adjust until labor supply equals labor demand. The unemployment resulting from wage rigidity and job rationing is called structural unemployment. Workers are unemployed not because they can’t find a job that best suits their skills, but rather, at the going wage, the supply of labor exceeds the demand. These workers are simply waiting for jobs to become available. S D Labor Real wage U Rigid real wage If the real wage is stuck above the equilibrium level, then the supply of labor exceeds the demand. Result: unemployment U.

Chapter Six7 The government causes wage rigidity when it prevents wages from falling to equilibrium levels. Economists believe that the minimum wage has the greatest impact on teenage unemployment. Studies suggest that a 10-percent increase in the minimum wage reduces teenage employment by 1 to 3 percent. Many economists and policymakers believe that tax credits are a better way to increase the incomes of the working poor. The earned income tax credit is an amount that poor working families are allowed to subtract from the taxes they owe.

Chapter Six8 Another cause of wage rigidity is the monopoly power of unions. In the US, only 16 percent of workers belong to unions. Often, union contracts set wages above the equilibrium level and allow the firm to decide how many workers to employ. Result: a decrease in the number of workers hired, a lower rate of job finding, and an increase in structural unemployment. The unemployment caused by unions is an instance of conflict between different groups of workers– insiders and outsiders. In the US, this is solved at the firm level through bargaining.

Chapter Six9 Efficiency-wage theories hold that high wages make workers more productive. So, though a wage reduction would lower a firm’s wage bill, it would also lower worker productivity and the firm’s profits. Another efficiency-wage theory contends that high wages reduce labor turnover. A third efficiency wage theory holds that the average quality of a firm’s workforce depends on the wage it pays its employees. A fourth efficiency wage theory holds that a high wage improves worker effort.

Chapter Six10 Natural rate of unemployment Frictional unemployment Sectoral shift Unemployment insurance Wage rigidity Structural unemployment Insiders versus outsiders Discouraged workers