The purpose of this study was to determine the effect of breast cancer fear levels of female seasonal agricultural laborers between ages 40 and 60 on breast cancer early-diagnosis behaviors and perceptions. This is a cross-sectional study. The data of the study were collected between February and September 2014 in Şanlıurfa, Turkey. A sample of the study group consisted of 350 women. The data were assessed by using SPSS 16.0 statistics package software. Descriptive statistics, t test, chi-square, and correlation analysis were used to analyze the data. Considering that breast cancer fear levels are effective on the breast cancer early-diagnosis behaviors and health beliefs, it can be recommended for the health care staff to carry out initiative works to reduce the fear levels.