安全投入对煤矿企业经济效益的门槛效应研究

Study on threshold effect of safety investment on economic benefit of coal mine enterprise

基于11家国有煤矿企业调研数据,借鉴Hansen面板门槛模型,对煤矿企业安全投入与经济效益的关系进行研究,并将安全投入结构作为门槛变量探讨其调节作用。结果表明:安全投入与经济效益存在显著的双重门槛效应,当安全投入水平较低时,增加安全投入将提高企业经济效益,但当安全投入水平达到一定门槛值后,增加安全投入会降低企业经济效益;将安全投入结构作为门槛变量时,存在显著的单一门槛效应,且其在安全投入与经济效益的关系中具有负向调节作用。

Based on the survey data of 11 state-owned coal mine enterprises and reference for Hansen panel threshold model,the relationship between safety investment and economic benefit of coal mine enterprises was studied,and the safety investment structure was taken as the threshold variable to explore its adjustment function.The results show that there is a significant double threshold effect between safety investment and economic benefit,when the level of safety investment is low,increasing safety investment will improve economic benefits of enterprises,but when the level of safety investment reaches a certain threshold value,increasing safety investment will reduce economic benefits;when the safety investment structure is taken as a threshold variable,there is a significant single threshold effect,and it has a negative adjustment function on the relationship between safety investment and economic benefit.