关键词: 政府补贴, 安全投资, 企业规模, 煤炭企业

Abstract: This paper uses Pigous externality theory, and selects listed coal companies to analyze the effect of governmental subsidy on their safety investment, with the results showing an encouragement that the more the subsidy, the more safety investment. The scale of enterprise is positive to its safety investment. The bigger the scale is, the more profits the enterprise can obtain, the more money spent on safety programs. Therefore the government shall enhance the subsidy on the safety programs of coal companies, and encourage merge and acquisition of small coal mines by larger ones.

Key words: governmental subsidy, safety investment, enterprise scale, coal enterprise