Recent studies on necessity and opportunity entrepreneurs show that these two profiles could lead to different entrepreneurial behaviors. Opportunity entrepreneurs are more growth oriented, innovative and successful - in terms of firm survival rate - than necessity entrepreneurs. These differences could result from dissimilarities in the gestation process, i.e. the activities undertaken by nascent entrepreneurs during the organization’s creation process. Research demonstrates that the gestation process has an impact on employment growth, innovation and firm success. Furthermore, researchers emphasized that the process of firm creation has two different stages: the conception stage, or precipitating events, and the gestation stage. Precipitating events are the circumstances, negative or positive, that lead the individual to decide to create a firm and that are related to his/her motivations, i.e. necessity or opportunity. Recent research stressed, without testing, the importance of studying how precipitating events influence the gestation process. The objective of our study is to examine whether necessity and/or opportunity entrepreneurs differ in the gestation process.