Control Over Practice as a Mediator Between Role Overload and Job Strain Among Hospital Nurses: A Structural Equation Modeling Approach

ObjectiveThis study aimed to investigate whether control over practice plays a mediating role in the relationship between job strain and role overload among nurses in a hospital setting. MethodsA cross-sectional survey was conducted among 306 nurses selected using a stratified random sampling technique. The Working Condition Scale was used to collect demographic information and assess working conditions, while job strain was measured using nine statements across the four dimensions. The data were analyzed using Smart PLS 3. ResultsThe structural model was evaluated by examining the R2, Q2, and significance of the paths. Hypothesis testing revealed significant associations between role overload and job strain ({beta} = 0.904, t = 7.072, p = 0.000), role overload and control over practice ({beta} = -0.649, t = 11.045, p = 0.000), and control over practice and job strain ({beta} = 0.259, t = 1.976, p = 0.048). The mediation analysis showed that control over practice fully mediated this relationship ({beta}= -0.168, t = 1.766, p = 0.078). ConclusionEnhancing control over work can alleviate adverse effects of role overload on job strain among nurses. This finding has crucial implications for organizations to reduce job strain. Future studies should explore alternative strategies. Summary statementO_ST_ABSWhat is already known about this topic?C_ST_ABSO_LIRole overload is recognized as a significant contributor to job strain among nurses, particularly in high-pressure hospital environments. C_LIO_LIControl over practice has been proposed as a potential mitigating factor; however, its specific mediating role remains inadequately explored. C_LI What this paper adds?O_LIThis study presents empirical evidence demonstrating that control over practice significantly mediates the relationship between role overload and job strain. C_LIO_LIIt emphasizes that increased control over practice among nurses mitigates the adverse effects of role overload on job strain. C_LIO_LIStructural Equation Modeling substantiates the presence of a full mediation effect, thereby enhancing the understanding of the underlying mechanisms involved. C_LI The implications of this paperO_LIStrengthening nurses autonomy in their professional roles represents a strategic intervention aimed at alleviating job strain and enhancing overall well-being. C_LIO_LIIt is imperative for hospitals and healthcare policymakers to prioritize organizational reforms that empower nursing personnel within their professional environments. C_LIO_LIThe findings of this study advocate for the formulation of targeted programs and leadership practices that foster autonomy and encourage participatory decision-making among nursing staff. C_LI