The purpose of this paper is to determine the problems due to abnormally low tenders (ALTs) and to develop some methods for reducing the negative effects of ALTs. In this paper, the reasons of ALTs, recommendations to eliminate ALTs were investigated. According to this investigation, it was observed that results change due to different social structures of countries. In addition to this investigation, ALT evaluation questionnaire was prepared to determine reasons of ALTs. The ALT evaluation questionnaire reached to 400 companies. 18 questions were asked to the companies. Qualitative statistical methods were used to analyze correlation between variables. Comprehensive analysis was applied to the questionnaire and reasons behind ALTs were determined. Finally, some recommendations are proposed to professionals.