1. The top twenty industries experiencing the largest gains in employment opportunities due to trade are classified as “trade-enhanced industries.” The bottom twenty industries experiencing the least employment gains due to trade are classified as “adversely affected industries.” The choice of twenty industries in either category is meant to facilitate comparison with earlier studies. For a detailed analysis of a similar study undertaken in 1978 see “Trade and Employment.”National Commission for Manpower Policy, Special Report No. 30 (November 1978).
2. See Lester Davis,Contribution of Exports to U.S. Employment (Staff report). (Washington, D.C.: Office of Trade and Investment Analysis, International Trade Administration, U.S. Department of Commerce, March 1986) and M.C. Aho and J.A. Orr, “The Growth of Trade Sensitive Employment: Who are the Affected Workers?”, Vol. 104, No. 2,Monthly Labor Review (Washington, D.C.: Bureau of Labor Statistics, February 1981), pp. 29–35.
3. The classifications of these industries as high-tech is based on studies by the Bureau of International Labor Affairs (ILAB), published in a conference report,Trade and Employment, National Commission for Manpower Policy, Special Report No. 30 (November 1978), p. 61. Technical intensity is measured in two ways: a) research and development as a percentage of sales; and b) scientists and engineers as a percentage of the labor force.
4. See Lester Davis,Contribution of Exports to U.S. Employment (Staff report). (Washington, D.C.: Office of Trade and Investment Analysis, International Trade Administration, U.S. Department of Commerce, March 1986).
5. Ibid.