Introduction: Nurses play a fundamental role on continuity of care and health promotion and affect ‎organizational utilization. Awareness of nurses’ viewpoint on relationship between working shifts ‎and human resource utilization provides the possibility of increasing their utilization and helps ‎managers in achieving their major and crucial mission of increased utilization.

‎ Objective: This study aims to determine the relationship between nurses’ working shifts and ‎utilizing human resources in state hospitals in northwest of Guilan province.‎

 Methods: This research is descriptive analytical cross-sectional study. Study sample included nurses ‎with a Bachelor degree and higher and ‎‏184‏‎ nurses were chosen by random stratified sampling ‎method. The tool of data gathering was a questionnaire that its validity was obtained through the ‎content validity by grasping the views of Professors of management and nursing and its reliability ‎was attained through test-retest process. The collected data was analyzed using descriptive – ‎statistical test (One-way ANOVA and student T) by SPSS software.‎ Results: Using one-way ANOVA the results showed that five factors of organizational culture, ‎environmental conditions, motivational factors, enabling and leadership style were significantly ‎affected by working shifts. Among these factors, the factor of organizational culture had the most ‎effect on nurses utilization in the working shifts (p<‎‏0.05‏‎).‎

 Conclusion: Human resource utilization was highest in the morning shifts and then rotating shifts, ‎evening shifts and night shifts were reported.‎