PurposeAlthough the impostor phenomenon is attributed to childhood experiences, theory on achievement motivation indicates that achievement-related fears can also be elicited by the context. Using achievement goal theory as a base, the authors investigate the effect of context-dependent predictors, job-fit, career stage and organisational tenure, on impostor fears. The authors also examined gender and the achievement-related traits, self-efficacy and locus of control, as predictors of impostor fears to advance knowledge on antecedents to impostor fears.Design/methodology/approachTwo studies were conducted with 270 and 280 participants, each. In Study 1, a subset of 12 respondents participated in follow-up interviews.FindingsImpostor fears tended to be predicted by organisational tenure and career stage in both studies and job-fit in Study 1. Self-efficacy and locus of control predicted impostor fears. Men and women reported similar levels of impostor fears.Practical implicationsThe authors demonstrate the importance of context in eliciting impostor fears and partially support initial descriptions of antecedents to impostor fears. The findings contribute to the development of targeted managerial practices that can help with the development of interventions, such as orientation programmes, that will enhance socialisation processes and mitigate impostor fears.Originality/valueThe literature on imposter fears has not addressed their situational predictors, which the authors argue are important elements in the genesis and maintenance of impostor fears. The authors draw on achievement goal theory to explain the pattern of findings related to key situational characteristics and their influence on imposter fears. The findings for Sri Lanka, on personality predictors, are similar to those reported in studies focused on North America providing evidence of cross-cultural applicability of the concept.