The third and fourth of the five-year plans occurred from 1973 to 1981. During this period, the country’s labor force was in high demand. Competition from other countries began eroding South Korea’s competitive edge. The government responded to this change by concentrating its efforts on mechanical and electrical engineering, shipbuilding, petrochemicals, construction, and military initiatives. At the end of this period, the government forced Daewoo into shipbuilding. Kim was reluctant to enter this industry, but Daewoo soon earned a reputation for producing competitively priced ships and oil rigs.

During the next decade, the Korean government became more liberal in its economic policies. Small private companies were encouraged, protectionist import restrictions were loosened, and the government reduced positive discrimination (affirmative action), to encourage free market trade and to force the chaebol to be more aggressive abroad. Daewoo responded by establishing a number of joint ventures with U.S. and European companies. It expanded exports of machine tools, defense products (under the S&T Daewoo company), aerospace interests, and semiconductor design and manufacturing. Eventually, it began to build civilian helicopters and airplanes, priced considerably cheaper than those produced by its U.S. counterparts. It also expanded efforts in the automotive industry and was ranked as the seventh largest car exporter and the sixth largest car manufacturer in the world. Throughout this period, Daewoo experienced great success at turning around faltering companies in South Korea.