การศึกษาความสัมพันธ์ระหว่างอัตราค่าจ้างและปัจจัยที่ส่งผลต่ออัตราค่าจ้างแรงงานก่อสร้าง / โตมร หลินหะตระกูล = A study of relationship between wages and factors influencing wages of construction labors / Tomon Linhatrakul
The objective of this research is to study the relationship between wages and factors influencing wages of construction labors. The research methodologies consist of 1) study basic factors influencing construction labors’ wage from literature reviews, and interview to 12 experts. The factors were classified into 2 groups such as quantitative factors which consist of age, experience in construction works, experience in construction company, quality score of work and productivity, and qualitative factors which consist of sex, type of company, labor demand and working environment. 2) The data of labors’ wage and factors influencing labors’ wage were collected by interviewing to 631 samples in 5 types of construction labor. The data were analyzed by using multiple regression method following qualitative factors such as type of company, labor demand and working environment. 3) Classify the level of construction labors’ wage following factors influencing construction labors’ wage in each type of labor. 4) Validate the accuracy of equations of relationship between wages and factors influencing wages of construction labors.The results of this research show that labor demand does not influence construction labor wage. However, type of company and working environment influence construction labor wage. Under qualitative factors, the factors influencing construction labors’ wage are sex, experience and quality score of work. Under type of company and working environment factor, the wages of labors in each level are not different at significant level 0.05. However, the average of construction labors’ wage per day in first level is 354 bahts, second level is 404 bahts and third level is 453 bahts. The multiple regression equations can be used to estimate construction labors’ wage and level of labors’ wage can be applied to manage cost of construction labor. The error of equations of relationship between wage and factors influencing construction labors’ wage is around 4 percentages.