In addition to companies from developed countries, there are many contenders from developing countries, such as Thailand, Korea and the Philippines.
規模較大、水準較高的建設公司，都屬已開發國家，他們本國的工資昂貴，為降低成本，多在當地招募工人，這些工人來自工資較低的泰、韓、菲律賓等國。