Introduction: The on-call pass is one of the means of coordination within each service that is used to schedule, manage and evaluate patient care.Objective: to describe the behavior of variables of the perception of nursing human resources on the quality of internal communication in on-call duty and the modalities of teamwork.Methods: An observational, descriptive, cross-sectional study was carried out. The sample consisted of 71 units of analysis. A semi-structured, self-administered questionnaire was used.Results: In relation to knowledge about internal communication during on-call duty, positive responses prevailed, with the Teamwork indicator standing out with 94.4% of positive responses (P = 0.006). Positive attitudes related to internal communication during the on-call duty shift dominated, with a predominance of strategic vision and complementarity with 99% positivity each (P < 0.001). In relation to practices in the on-call pass; all responses resulted negative above 70% (P