J Korean Acad Nurs Adm.  2014 Sep;20(4):353-361. 10.11111/jkana.2014.20.4.353.

Impact of 12-hour Shifts on Job Satisfaction, Quality of Life, Hospital Incident Reporting, and Overtime Hours in a Pediatric Intensive Care Unit

  • 1Department of Nursing, Asan Medical Center, Korea. jyuhm@amc.seoul.kr


The aim of this study was to compare job satisfaction, quality of life (QOL), incident report rate and overtime hours for 12-hour shifts and for 8-hour shifts in a pediatric intensive care unit (PICU).
A descriptive survey was conducted with a convenience sample of 36 staff nurses from a PICU in a regional hospital in Korea. Data were collected using self-administrated questionnaires regarding job satisfaction and QOL at 6 months before and after the beginning of 12-hour shifts. Incident report rate and overtime hours for both 12-hour and 8-hour shifts were compared. Comparisons were made using chi2-test, paired t-test and Mann-Whitney U test.
After 12-hour shifts were initiated, job satisfaction significantly increased (t=3.93, p<.001) and QOL was higher for nurses on 12-hour shifts compared to 8-hour (t=7.83, p<.001). There was no statistically significant change in incident report rate (chi2=0.15, p=.720). The overtimes decreased from 36.3+/-34.7 to 17.3+/-34.9 minutes (Z=-8.91, p<.001).
These results provide evidence that 12-hour shifts can be an effective ways of scheduling for staff nurses to increase job satisfaction and quality of life without increasing patient safety incidents or prolonged overtime work hours.


12-hour shifts; Job satisfaction; Quality of life; Incident report rate; Overtime hour

MeSH Terms

Intensive Care Units*
Job Satisfaction*
Patient Safety
Quality of Life*
Surveys and Questionnaires
Risk Management*


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