Background
Healthcare workers (HCWs) voicing their views (speaking up) is crucial for patient safety and care quality. Yet, this is underused, especially during multidisciplinary team meetings (MDTMs), where diverse professionals collaborate to optimise patient treatment plans. Despite the benefits of open communication, HCWs face barriers such as hierarchical dynamics, time constraints and psychological risks.

Aim
This study examines factors influencing HCWs’ speaking-up behaviours in MDTMs, focusing on motivators, barriers and dynamics across disciplines.

Method
We conducted 21 semistructured interviews with MDTM participants of a gastrointestinal surgery ward, including surgeons, residents, nurses, nursing students, dieticians, ostomy nurses and physical therapists. Data were analysed collaboratively using thematic analysis.

Results
Participants are highly motivated to advocate for patients and provide optimal care. However, barriers impact speaking up during MDTMs. Three major themes were identified: (1) time pressure, (2) perception of goals and roles and (3) familiarity among team members. Structural, relational and contextual factors affect HCWs’ ability to speak up, with nurses and paramedics experiencing more hesitancy than physicians. Lack of preparation time, ambiguous objectives, no formal agenda and unfamiliarity among team members hinder contributions, leading to unbalanced input.

Conclusion
Findings support a systems-based approach to addressing barriers. Interventions should focus on clear goals, reduced time pressures and enhanced team cohesion, rather than placing the responsibility solely on individuals. For instance, adjusting meeting schedules to accommodate diverse availability improves participation across disciplines. Strengthening familiarity among team members fosters trust and lowers the perceived risks of speaking up, ensuring more balanced contributions during MDTMs.

Background
Speaking up among healthcare professionals plays an essential role in improving patient safety and quality of care, yet it remains complex and multifaceted behaviour. Despite awareness of potential risks and adverse outcomes for patients, professionals often hesitate to voice concerns due to various influencing factors. This complexity has encouraged research into the determinants of speaking-up behaviour in hospital settings. This review synthesises these factors into a multi-layered framework. It aims to provide a more comprehensive perspective on the influencing factors, which provides guidance for interventions aimed at fostering environments contributing to speaking up in hospitals.

Methods
A systematic review was conducted in November 2024, searching databases: PubMed, Scopus and Web of Science. Following PRISMA guidelines and the three stages for thematic synthesis, we developed the classification of influencing factors. Out of 1,735 articles identified articles, 413 duplicates were removed, 1,322 titles and abstracts were screened, and 152 full texts (plus six additional articles) were assessed. Ultimately, 45 articles met the inclusion criteria.

Results
The review categorised influencing factors into four categories: individual (29 articles, 64%), relational (21 articles, 47%), contextual (19 articles, 42%), and organisational (26 articles, 58%). These categories encompass motivating, hindering and trade-off factors affecting speaking up among healthcare professionals in hospitals.

Conclusions
The multi-layered framework highlights the dynamic interplay of factors influencing speaking up among healthcare professionals. A systems approach is essential for identifying barriers and enablers and designing effective speaking up interventions. This framework serves as a foundation for more focused research and practical guidance, enabling healthcare leaders to address barriers across all categories. By fostering environments that support open communication, organisations can enhance patient safety and quality of care.