When searching WorldCat and periodical databases, you might want to try using some of the following subject headings:
Race discrimination
Discrimination in employment
Minorities -- Employment
Affirmative action programs
Diversity in the workplace
Here are some books, articles, and websites that might be useful ....
BOOKS
Arnesen, Eric, ed. The Black Worker : Race, Labor, and Civil Rights since Emancipation. Urbana: University of Illinois Press, 2006.
Burstein, Paul. Equal Employment Opportunity: Labor Market Discrimination and Public Policy. New York: Aldine de Gruyter, 1994.
Cherry, Robert. Who Gets the Good Jobs?: Combating Race and Gender Disparities. New Brusnwick, NJ: Rutgers University Press, 2001.
Cohen, Samuel. Race and Gender Discrimination at Work. Boulder, CO: Westview Press, 2000.
Darity, William. Persistent Disparity: Race and Economic Inequality in the United States Since 1945. Northampton MA: Elgar, 1998.
Ezorsky, Gertrude. Racism and Justice: The Case for Affirmative Action. Ithaca: Cornell University Press, 1991.
Jones, Jacqueline. American Work: Four Centuries of Black and White Labor. New York: W.W. Norton, 1999.
Moss, Philip I. and Chris Tilly. Stories Employers Tell: Race, Skill, and Hiring in America. New York: Russell Sage Foundation, 2001.
Nelson, Bruce. Divided we Stand: American Workers and the Struggle for Black Equality. Princeton, N.J.: Princeton University Press, 2001.
Roediger, David R. The Wages of Whiteness: Race and the Making of the American Working Class. New York: Verso, 1991.
Royster, Deirdre. Race and the Invisible Hand: How White Networks Exclude Black Men from Blue-collar Jobs. Berkeley: University of California Press, 2003.
Watkins, Steve. The Black O: Racism and Redemption in an American Corporate Empire. Athens: University of Georgia Press, 1997.
Wilson, George. Race, Ethnicity, and Inequality in the U.S. Labor Market: Critical Issues in the New Millennium. Thousand Oaks, CA: SAGE Publications, 2007.
Wilson, Joseph, Manning Marable, and Immanuel Ness, eds. Race and Labor Matters in the New U.S. Economy. Lanham: Rowman & Littlefield, 2006.
Zieger, Robert H. For Jobs and Freedom : Race and Labor in America since 1865. Lexington: University Press of Kentucky, 2007.
ARTICLES
Alexis, Marcus. "The Economics of Racism." The Review of Black Political Economy 26.3 (1999): 51-75.
Bielby, William T. "Minimizing Workplace Gender and Racial Bias.” Contemporary Sociology 29.1 (2000): 120-9.
Brown, Michael K. "Is Race Experienced as Class?" Labor History 41.4 (2000): 513-6.
Cohen, Philip N., and Matt L. Huffman. "Black Underrepresentation in Management Across U.S. Labor Markets." The Annals of the American Academy of Political and Social Science 609 (2007): 181-99.
Darity Jr., William A., and Patrick L. Mason. "Evidence on Discrimination in Employment: Codes of Color, Codes of Gender." Journal of Economic Perspectives 12.2 (1998): 63-90.
Deitch, Elizabeth A., Adam Barsky, and Rebecca M. Butz. "Subtle Yet Significant: The Existence and Impact of Everyday Racial Discrimination in the Workplace." Human Relations 56.11 (2003): 1299-324.
Headlee, Sue. "Income and Wealth Transfer Effects of Discrimination in Employment." The Review of Black Political Economy 32.3/4 (2005): 39-64.
Hersch, Joni. "Skin Color Discrimination and Immigrant Pay." Emory Law Journal 58.2 (2008): 357-77.
Katel, Peter. "Affirmative Action." CQ Researcher 18 (2008): 841-864.
Kim, Changhwan, and Christopher R. Tamborini. "The Continuing Significance of Race in the Occupational Attainment of Whites and Blacks: A Segmented Labor Market Analysis." Sociological Inquiry 76.1 (2006): 23-51.
Reskin, Barbara F. "The Proximate Causes of Employment Discrimination." Contemporary Sociology 29.2 (2000): 319-28.
Smith, Terry. "Everyday Indignities: Race, Retaliation, and the Promise of Title VII." Columbia Human Rights Law Review 34.3 (2003): 529-74.
Wilson, George. "Introduction: Race, Ethnicity, and Inequality in the American Workplace: Evolving Issues." American Behavioral Scientist 48.9 (2005): 1151-6.
WEBSITES
U.S. Equal Opportunity Employment Commission. Race/Color Discrimination.
http://www.eeoc.gov/types/race.html
U.S. Equal Opportunity Employment Commission. Enforcement Statistics and Litigation.
http://www.eeoc.gov/stats/enforcement.html
Bureau of Labor Statistics. Labor Force Statistics from the Current Population Survey, Demographics.
http://www.bls.gov/cps/demographics.htm#race
U.S. Department of Justice, Civil Rights Division. Employment Litigation: Frequently Asked Questions.
http://www.usdoj.gov/crt/emp/faq.php
AFL-CIO. Discrimination: Race or Ethnicity.
http://www.aflcio.org/issues/jobseconomy/workersrights/rightsatwork_e/disc_race.cfm
Cornell University, Legal Information Institute. Employment Discrimination.
http://topics.law.cornell.edu/wex/Employment_discrimination