economics of labor, 2013 fall elliott fan lecture 8 slide 1 econ 4009 labor economics i 2013 fall...

Economics of Labor, 2013 FallElliott Fan Lecture 8 slide 1

ECON 4009

Labor Economics I2013 Fall

Elliott FanEconomics, NTU

Lecture 8Discrimination

Economics of Labor, 2013 FallElliott Fan


Introduction

• Discrimination occurs when the marketplace takes into account such factors as race and sex when making economic exchanges.

• However, it is difficult to distinguish statistical discrimination, which refers to racial or gender inequality based on stereotypes, and discrimination based on preferences.

http://en.wikipedia.org/wiki/Statistical_discrimination


Race and Gender in the Labor Market

• Men earn more than women, and whites usually earn more than nonwhites.

• Differences in educational attainment between whites and nonwhites account for a portion of the wage differential.


The Discrimination Coefficient• Taste discrimination translates the notion of

racial prejudice.– Racial prejudice causes employers to blindly

perceive the costs of hiring blacks as being higher than the true cost.

– Even though it costs wb dollars to hire one person-hour of black labor, the employer acts as if it costs wb(1+d) dollars, where d, d>0, is the discrimination coefficient.


Employer Discrimination

• Implication of the Becker model• If blacks and whites are perfect substitutes,

employers have a segregated work force.– Even non-discriminating employers have a segregated work force, as

they employ all black workers

• Discrimination does not pay.– Employers hire the wrong type of worker and/or they hire the wrong

number of workers.


The Employment Decision for a Firm That Does Not Discriminate

If the market-determined black wage is less than the white wage, a firm that does not discriminate will hire only blacks. It hires black workers up to the point where the black wage equals the value of marginal product of labor, E*B. VMPE

wB

EB Employment

Dollars


The Employment Decision for a Prejudiced Firm

Firms that discriminate can be either white firms (if the discrimination coefficient is very high) or black firms (if the discrimination coefficient is relatively low). A white firm hires white workers up to the point where the white wage equals the value of marginal product. A black firm hires black workers up to the point where the utility-adjusted black wage equals the value of marginal product. Firms that discriminate hire fewer workers than firms that do not discriminate.

VMPE

EW

wW

EmploymentEmployment

Dollars

VMPE

EB

wB(1+d1)

wB(1+d0)

wB

EB*EB1

Dollars

(a) White Firm (b) Black Firm


Profits and DiscriminationDollars

Discrimination Coefficient

dW0

MAX

W

White Firms

Black Firms

Discrimination reduces profits in potentially two ways. A discriminatory firm that hires only white workers will hire too few workers at a very high wage. Even a discriminatory firm that only hires black workers is harmed by its actions as it hires too few workers.


The Black-White Wage Ratio in the Labor Market

• Employer discrimination generates a wage gap between equally skilled black and white workers.

• The quantity demanded for black labor increases as the black-while wage ratio falls.


Determination of Black/White Wage Ratio in the Labor Market

If the black-white wage ratio is very high, no firm in the labor market will want to hire blacks. As the black-white wage ratio falls, more and more firms are compensated for their disutility and the demand for black workers rises. The equilibrium black-white wage ratio is given by the intersection of supply and demand, and equals (wB/wW)*. If some firms prefer to hire blacks, they would be willing to hire blacks even if the black-white wage ratio exceeds 1, shifting the demand curve up to D. If the supply of blacks is sufficiently small, it is then possible for the black-white wage ratio to exceed 1.

Black-White Wage Ratio

Black Employment

(wB/wW)*

N0

1

R

D

S

D

(wB/wW)


Employee Discrimination

• Employee discrimination does not generate a wage differential between equally skilled black and white workers.

• Employee discrimination does not affect the profitability of firms.

• Work places will be segregated


Customer Discrimination

• If customers discriminate, their perceived price of a good is utility-adjusted with a discrimination coefficient.

• When a firm cannot hide black workers, customer discrimination can have an adverse effect on black wages.


Statistical Discrimination

• Statistical discrimination is based on treating an individual on the basis of membership in a group and knowledge of that group’s history.


The Impact of Statistical Discrimination on Wages

The worker’s wage depends not only on his own test score, but also on the mean test score of workers in his racial group. (a) If black workers, on average, score lower than white workers, a white worker who gets a score of T* earns more than a black worker with the same score. (b) If the test is a better predictor of productivity for white workers, high-scoring whites earn more than high-scoring blacks, and low-scoring whites earn less than low-scoring blacks.

Dollars

White

Black

Test ScoreT* T

Dollars

Test Score

(a) Whites have higher average score (b) Test is better predictor for white workers

Black

White


Measuring Discrimination

• One possible measure of discrimination is the difference in mean wages.

• A better measure would compare the wages of equally skilled workers.

• Oaxaca decomposition: a technique that decomposes the raw wage differential into a portion related to a difference in skills and a portion attributable to labor market discrimination.


Oaxaca decompositionMale earnings function:

Female earnings function: M M M M

F F F F

w s

w s

=

( ) ( )M F M M M F F F

M F M F F M M F

w w w s s

s s s

• The first 2 terms combined captures the differential due to discrimination, while the last term is the component of differential that can be explained by skills.


Measuring the Impact of Gender Discrimination on the Wage

Dollars

Men’s Earnings Function

Women’s Earnings Function

Schooling sF s

M

w

M

wF

M

wF

F

The average woman has sF years of schooling and earns w–

F. The average man has sM years of schooling and earns w–

M. Part of the wage differential arises because men have more schooling than women. If the average woman was paid as if she were a man, she would earn w*F. A measure of discrimination is then given by w*F–w–

F.


Policy Application: Determinants of the White-Black Wage Ratio

• There has been an upward trend in the wages of blacks in recent years.

• This has been attributed to increases in the quality and quantity of black schooling.

• Government programs have positively affected black wages.


The Oaxaca Decomposition of the Black-White Wage Differential, 1995

Controls for Differences in Education, Age, Sex, and

Region of Residence

Controls for Differences in Education, Age, Sex,

Region, and Occupation and Industry

Raw log wage differential -0.211 -0.211

Due to differences in skills -0.082 -0.144

Due to discrimination -0.134 -0.098

Source: Joseph G. Altonji and Rebecca M. Blank, “Race and Gender in the Labor Market,” in Orley Ashenfelter and David Card, editors, Handbook of Labor Economics, vol. 3C, Amsterdam: Elsevier, 1999, Table 5. The log wage differential between any two groups can be interpreted as being approximately equal to the percentage wage differential between the groups.


The Trend in the Black-White Earnings Ratio, 1967-2009

1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 20150.600000000000001

0.650000000000001

0.700000000000001

0.750000000000001

0.800000000000001

0.850000000000001

0.900000000000001

0.950000000000001

1

Year

Bla

ck-w

hit

e ea

rnin

gs

raat

io

Men

Women


Male Labor Force Participation Rates, by Race, 1955-2009

1950 1960 1970 1980 1990 2000 201060

65

70

75

80

85

90

Year

Par

tici

pat

ion

Rat

e

Blacks

Whites


The Decline in the Labor Force Participation of Blacks and the Average

Black WageFrequency

Wage ratew~1 w~

2 w1 w

2


Discrimination Against Other Groups

• Differences in wages can be linked to varying educational attainment.

• Less skilled workers earn less, just as human capital theory proposes.

• Asians tend to earn more than white, mainly due to schooling.


The Trend in the Earnings Ratio of Hispanics and Asians, 1974-2009

1970 1975 1980 1985 1990 1995 2000 2005 2010 20150.600000000000001

0.700000000000001

0.800000000000001

0.900000000000001

1

1.1

1.2

Year

Ear

nin

gs

Rat

io

Hispanic men

Hispanic Women

Asian men

Asian women


Policy Application: Determinants of the Male-Female Wage Ratio

• Occupational crowding has segregated women into particular occupations where the return to education is lower.

• Human capital is more profitable the longer the payoff period.

• Women are better off if they enter occupations in which their skills do not deteriorate during the years they spend in the household sector.


Trend in the Female-MaleEarnings Ratio, 1960-2009

1960 1970 1980 1990 2000 2010 20200.5

0.55

0.6

0.65

0.7

0.75

0.8

Year

Fem

ale-

Mal

e E

arn

ing

s R

atio

economics of labor, 2013 fall elliott fan lecture 8 slide 1 econ 4009 labor economics i 2013 fall...

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