As there has been an increasing influx of white collar woman professionals in Dhaka, maintaining work- family balance is becoming more critical day by day. This study particularly attempts to explore the correlation between working hour and work family imbalance. Three FGDs, each with 10 female managers, were conducted, to make a total sample size of 30. Findings report extensive working hours, per se 9-10 hours a day, as a lethal contributor to work family conflict, whereas shorter working hours( average 5-7 hours) have little or no affect. This study is based only Dhaka city and concentrated only private commercial organizations. So extended sample with more coverage is suggested .