Objective: Fertility and family planning behavior are sets of knowledge and attitudes that regulate the number and spacing of children in a family through the practice of contraception or other methods of birth control. This exploratory research was conducted to analyze the behavior and perception of working women towards fertility and family planning. Material and Methods: By using purposive sampling, data taken from a sample of 440 women (15-49 years) from selected 9 wards in Khulna city. Results: The findings show that majority of the respondents, belong to 15-38 age group , were Muslims (78%), marital age (16.75%),age at first conception(18.81) , having an education around 5 years, and normal weight (23.6621) on average. Living in nuclear family (64.1%), with less educated (5.62 year) and low income (6946.62 BDT) husbands, they engaged in any work. About fertility and family planning behavior, the findings disclose that nearly half of the respondents (42.3%) not participated in first conception decision, used contraceptive at present(85.5%) and oral pill(56.9%). The respondents (71.4%) had high perception regarding Family Planning Methods. The study, however, conclusively identified year of schooling (p