ICU is defined as a place that provides health care service for critically ill patients who needs exigent treatment to strengthen health care with support from surveillance equipment for patients. ICU nurses become one of the important roles in providing health care in ICU. ICU nurses have to contact with death, critical situations of patients, facing large of pressure in performing their job in ICU. But they always demanded to provide the best performance of care that result in higher quality care in monitoring patients for long hours. Patient safety has played as an important role in health care world. This study was covered three parts of purposes. First is to determine the work-related factors that perceived by ICU nurses which could affect their nursing working performance. Second is to identify the impact of the work-related factors to the nurse while they performing their duties in ICU. Third is to provide suggestions in order to improving the design effort and quality care in ICU. The result showed that there were 9 factors which could affect nurse while they progress their duties in ICU including social interaction, ICU occurrence, organizational issues, discussions, decision making standard, motivation, education and training, verification and source of stress. The impact of the identify factors include all the action that related to their working process such as mood, speed, effectiveness, motivation, workload, spirit, etc. Job satisfaction for level seven was also found for 36% participants in this study. This study suggest that there were need some adjustment in staffing, working shift and hours, work scheduling and others for helping participants cope and improve in their quality of care.

ICU is defined as a place that provides health care service for critically ill patients who needs exigent treatment to strengthen health care with support from surveillance equipment for patients. ICU nurses become one of the important roles in providing health care in ICU. ICU nurses have to contact with death, critical situations of patients, facing large of pressure in performing their job in ICU. But they always demanded to provide the best performance of care that result in higher quality care in monitoring patients for long hours. Patient safety has played as an important role in health care world. This study was covered three parts of purposes. First is to determine the work-related factors that perceived by ICU nurses which could affect their nursing working performance. Second is to identify the impact of the work-related factors to the nurse while they performing their duties in ICU. Third is to provide suggestions in order to improving the design effort and quality care in ICU. The result showed that there were 9 factors which could affect nurse while they progress their duties in ICU including social interaction, ICU occurrence, organizational issues, discussions, decision making standard, motivation, education and training, verification and source of stress. The impact of the identify factors include all the action that related to their working process such as mood, speed, effectiveness, motivation, workload, spirit, etc. Job satisfaction for level seven was also found for 36% participants in this study. This study suggest that there were need some adjustment in staffing, working shift and hours, work scheduling and others for helping participants cope and improve in their quality of care.

Al-khasawneh, A. L., & Futa, S. (2013). The Relationship between Job Stress and Nurses Performance in the Jordanian Hospitals. Asian Journal of Businness Management, 5(2), 267-275.
Amin, S. G. (2011). A study to determine the influence of workload on nursing personnel. ProQuest Dissertations and Theses.
Arevalo, J. J., Rietjens, J. A., Swart, S. J., Perez, R. S., & van der Heide, A. (2013). Day-to-day care in palliative sedation: survey of nurses' experiences with decision-making and performance. Int J Nurs Stud, 50(5), 613-621. doi: 10.1016/j.ijnurstu.2012.10.004
Bakalis, N., Bowman, G. S., & Porock, D. (2003). Decision making in Greek and English registered nurses in coronary care units. Int J Nurs Stud, 40(7), 749-760. doi: 10.1016/s0020-7489(03)00014-2
Ballangrud, R., Hedelin, B., & Hall-Lord, M. L. (2012). Nurses' perceptions of patient safety climate in intensive care units: a cross-sectional study. Intensive Critical Care Nurs, 28(6), 344-354. doi: 10.1016/j.iccn.2012.01.001
Beckmann, V., Baldwin, I., Hart, G.K., Runciman, W. B. (1996). Human error in Health Care. The Australian Incident Monitoring Studyin Intensive Care (AIMS-ICU): An Analysis of the First Year of Reporting. Anaesthesia and Intensive Care 24 (1996): 320–329.
Carayon, P. (2010). Human factors in patient safety as an innovation. Appl Ergon, 41(5), 657-665. doi: 10.1016/j.apergo.2009.12.011
Carayon, P., & Gurses, A. P. (2005). A human factors engineering conceptual framework of nursing workload and patient safety in intensive care units. Intensive Critical Care Nurs, 21(5), 284-301.1-12 doi: 10.1016/j.iccn.2004.12.003
Carayon, P., Wetterneck, T. B., Rivera-Rodriguez, A. J., Hundt, A. S., Hoonakker, P., Holden, R., Gurses, A. P. (2013). Human factors systems approach to healthcare quality and patient safety. Appl Ergon. doi: 10.1016/j.apergo.2013.04.023
Carlson, E., Rämgård, M., Bolmsjö, I., & Bengtsson, M. (2013). Registered nurses’ perceptions of their professional work in nursing homes and home-based care: A focus group study. Int J Nurs Stud. 1-25. doi: 10.1016/j.ijnurstu.2013.10.002
Carmel, S. (2006). Health care practices, professions and perspectives: a case study in intensive care. Soc Sci Med, 62(8), 2079-2090. doi: 10.1016/j.socscimed.2005.08.062
Chang, H.-L., Lin, C.-F. (2008). Factors Related to Newly-Under Graduated Nurses Turnover Rates.
Chiu, M.-C., Wang, M.-J., Lu, C.-W., Pan, S.-M., Kumashiro, M.. Ilmarinen, J. (2007). Evaluating work ability and quality of life for clinical nurses in Taiwan. Nurs Outlook, 55(6), 318-326. doi: 10.1016/j.outlook.2007.07.002
Chiang, H.-Y. (2006). Barriers to Nurses' Reporting of Medication Administration Errors in Taiwan. Journal of Nursing Scholarship. 392-399
Chiang, Y.-M., & Chang, Y. (2012). Stress, depression, and intention to leave among nurses in different medical units: implications for healthcare management/nursing practice. Health Policy, 108(2-3), 149-157. doi: 10.1016/j.healthpol.2012.08.027
Chu, C.-I., & Hsu, Y.-F. (2011). Hospital nurse job attitudes and performance: the impact of employment status. J Nurs Res, 19(1), 53-60. doi: 10.1097/JNR.0b013e31820beba9
DeLucia, P. R., Ott, T. E., Palmieri, P. A. (2009). Performance in Nursing. Reviews of Human Factors and Ergonomics, 5(1), 1-40. doi: 10.1518/155723409x448008
Donald Hay, M. (1972). The Psychological Stresses. Psychosomatic Medicine, 34.
Donchin, Y. (2003). A look into the nature and causes of human errors in the intensive care unit. Quality and Safety in Health Care, 12(2), 143-147. doi: 10.1136/qhc.12.2.143
Duffield, C., Diers, D., O'Brien-Pallas, L., Aisbett, C., Roche, M., King, M., & Aisbett, K. (2011). Nursing staffing, nursing workload, the work environment and patient outcomes. Appl Nurs Res, 24(4), 244-255. doi: 10.1016/j.apnr.2009.12.004
El-Masri, M., & Fox-Wasylyshyn, S. M. (2007). Nurses' roles with families: perceptions of ICU nurses. Intensive Crit Care Nurs, 23(1), 43-50. doi: 10.1016/j.iccn.2006.07.003
Gabrielle, S., Jackson, D., & Mannix, J. (2008). Adjusting to personal and organisational change: Views and experiences of female nurses aged 40–60 years. Collegian, 15(3), 85-91. doi: 10.1016/j.colegn.2007.09.001
Gurses, A. P., & Carayon, P. (2009). Exploring performance obstacles of intensive care nurses. Appl Ergon, 40(3), 509-518. doi: 10.1016/j.apergo.2008.09.003
Hasson, F., McKenna, H. P., & Keeney, S. (2013). A qualitative study exploring the impact of student nurses working part time as a health care assistant. Nurse Educ Today, 33(8), 873-879. doi: 10.1016/j.nedt.2012.09.014
Hunt, S. T. (2009). NursingTurnover: Costs, Causes,& Solutions. SuccesFactors Healthcare.

Jamal, M. (2011). Job stress, job performance and organizational commitment in a multinational company. International Journal of Business and Social Science, 2.
Kao, C.-C. (2011). Multi-aspects of Nursing Man-Power in Taiwan. CHENG CHING MEDICAL JOURNAL, 7.
Kilpatrick, K., Dicenso, A., Bryant-Lukosius, D., Ritchie, J. A., Martin-Misener, R., & Carter, N. (2013). Practice patterns and perceived impact of clinical nurse specialist roles in Canada: Results of a national survey. Int J Nurs Stud, 50(11), 1524-1536. doi: 10.1016/j.ijnurstu.2013.03.005
Knezevic, B., Milosevic, M., Golubic, R., Belosevic, L., Russo, A., & Mustajbegovic, J. (2011). Work-related stress and work ability among Croatian university hospital midwives. Midwifery, 27(2), 146-153. doi: 10.1016/j.midw.2009.04.002
Kostagiolas, P., Korfiatis, N., Kourouthanasis, P., & Alexias, G. (2014). Work-related factors influencing doctors search behaviors and trust toward medical information resources. International Journal of Information Management, 34(2), 80-88. doi: 10.1016/j.ijinfomgt.2013.11.009
Kurtzman, E. T., Dawson, E. M., & Johnson, J. E. (2008). The current state of nursing performance measurement, public reporting, and value-based purchasing. Policy Polit Nurs Pract, 9(3), 181-191. doi: 10.1177/1527154408323042
Lin, Y. -H., & Liu, H.-E. (2005). The impact of workplace violence on nurses in South Taiwan. Int J Nurs Stud, 42(7), 773-778. doi: 10.1016/j.ijnurstu.2004.11.010
McCallum, J., Duffy, K., Hastie, E., Ness, V., & Price, L. (2013). Developing nursing students' decision making skills: are early warning scoring systems helpful? Nurse Educ Pract, 13(1), 1-3. doi: 10.1016/j.nepr.2012.09.011
Mrayyan, M. T., & Hamaideh, S. H. (2009). Clinical errors, nursing shortage and moral distress: The situation in Jordan. Journal of Research in Nursing, 14(4), 319-330. doi: 10.1177/1744987108089431
Myny, D., Van Hecke, A., de Bacquer, D., Verhaeghe, S., Gobert, M., Defloor, T., & Van Goubergen, D. (2012). Determining a set of measurable and relevant factors affecting nursing workload in the acute care hospital setting: a cross-sectional study. Int J Nurs Stud, 49(4), 427-436. doi: 10.1016/j.ijnurstu.2011.10.005
Radtke, J. V., Tate, J. A., & Happ, M. B. (2012). Nurses' perceptions of communication training in the ICU. Intensive Crit Care Nurs, 28(1), 16-25. doi: 10.1016/j.iccn.2011.11.005
Rattray, J., Jones, M. C. (2007). Essential elements of questionnaire design and development. J Clin Nurs, 16(2), 234-243. doi: 10.1111/j.1365-2702.2006.01573.x
Rechel, B., Buchan, J., & McKee, M. (2009). The impact of health facilities on healthcare workers' well-being and performance. Int J Nurs Stud, 46(7), 1025-1034. doi: 10.1016/j.ijnurstu.2008.12.008
Sawatzky, J. A. (1996). Stress in critical care nurses: Actual and Perceived. HEART & LUNG, VOL. 25, NO. 5.
Shore, L. A., Martin, H. J.. (1989). Job Satisfaction and Commitment. Human Relations, 42, 625-638.
Tzeng, H. M. (2004). Nurses' self-assessment of their nursing competencies, job demands and job performance in the Taiwan hospital system. Int J Nurs Stud, 41(5), 487-496. doi: 10.1016/j.ijnurstu.2003.12.002
Willem, A., Buelens, M., & de Jonghe, I. (2007). Impact of organizational structure on nurses' job satisfaction: a questionnaire survey. Int J Nurs Stud, 44(6), 1011-1020. doi: 10.1016/j.ijnurstu.2006.03.013