According to recent studies, the level of international interest in bridge employment, as return to work after retirement, has been growing. This study aimed to explore the experiences of retired nurses in Iran with regard to making a decision about whether or not to seek bridge employment. A qualitative study using a content analysis approach was conducted in an urban area of Iran. Semi-structured interviews were held with 20 Iranian male and female retired nurses chosen using purposive sampling. During the data analysis, two main themes were identified as the participants' thoughts supporting the decision of seeking bridge employment. The first theme was entitled motivational factors with categories of ``serving the society,'' ``maintaining and promoting health,'' ``tendency toward flexible work,'' and ``maintaining the role and activity.'' The second theme was entitled forcing factors with categories of ``ardent desire to work (pluralistic ignorance)'' and ``financial need.' ' While some Iranian retired nurses were not motivated to seek work for health reasons, most preferred to return to work after retirement. They were motivated to seek bridge employment out of a desire to serve the society, to promote their own physical and mental health, to continue to use their expertise and maintain the worker role, and because of financial needs and perceived societal expectations. Nurses seeking employment later in life tended to look for job flexibility and less stressful work. Therefore, the management of bridge employment by healthcare system authorities can be useful in making use of the invaluable experiences of retired nurses.