In Sweden and globally, nurse shortages are a serious concern due to factors like the ageing population, with increased needs for care, and the ageing workforce (National Board of Health and Welfare, 2019;Smeds Alenius, 2018). Nurse-related factors have repeatedly been found to be associated with a range of patient outcomes. In addition, the work environment seems important for nurses' abilities to provide safe and high-quality care (Smeds Alenius, 2018). Having a sufficient number of competent nurses is essential to promote a favourable work environment and maintain patient safety and quality.To address these challenges, use of temporary nurses, also called travel nurses or agency nurses (ANs), provided by external agencies, is common (Birmingham et al., 2019;Manias et al., 2003a;Simpson & Simpson, 2019). In recent years, the use of private staffing agencies to supplement nursing staff has increased in Sweden (National Board of Health and Welfare, 2018). The use of agency staff, such as ANs, is often considered a failure and a disgrace to management.It is associated with poor continuity in care that is not performed or followed-up (Senek et al., 2020), considerable costs (Hurst & Smith, 2011;Manias et al., 2003b) and some nurse managers consider ANs to lack commitment in their professional work (Matlakala & Botha, 2016). This may negatively affect nurses' professional pride and role in general and their job satisfaction.Several studies indicate that the extent of safety and quality might not be related to the presence of ANs. For example, one study showed that the use of ANs was not associated with nosocomial infections (Bae et al., 2015), and another that there were no statistically significant differences in overall quality when comparing wards with and without ANs (Hurst & Smith, 2011). One study even found that a higher number of ANs in nursing homes resulted in higher quality of care (Castle & Engberg, 2008). Furthermore, in a study