SUMMARY Objective: One of the major reasons for the increase in nurse turnover rate in hospitals is the nurses’ negative work environment. The negativity of the work environment reduces nurses’ performance and adversely affects the quality of patient care and patient and health care workers safety. This present study was conducted to determine nurses' assessment of the work environments. Method : In this cross-sectional study, the study sample comprised 174 nurses who worked in Cumhuriyet University Hospital between October - November 2014, agreed to participate in the study and filled in the data collection forms completely. Data were collected with the sociodemographic characteristics questionnaire and the Nursing Work Index- the Practice Environment Scale”. Results : The mean age of the participating nurses was 32.09 ± 7:09. Of them, 86.8% were women, 64.9% were married, 74.7% had a graduate degree, 84.5% were permanently employed, 32.2% had a working experience in the profession less than 5 years and 79.9% were the members of a union or association. The total mean score obtained from the scale was X = 2.16 ± 0.49. Of the participants in the study, those who were male, contractual employees and/or members of a professional organization and whose length of service was under 5 years perceived their work environment more positively (p 0.05). Conclusions : It was found that the participating nurses assessed the work environment as moderately whereas they perceived the adequacy of manpower and other resources subscale negatively. Keywords : nursing, nursing work environment, patient & healthcare workers safety OZET Amac: Hastanelerde hemsire devir hizinin artmasinin onemli nedenlerinden birisi hemsirelerin calisma ortamlarinin olumsuz olmasidir. Calisma ortamlarinin olumsuzlugu ise hemsirelerin performansini azaltmakta, hasta bakim kalitesini ve hasta ve calisan guvenligini olumsuz etkilemektedir. Bu arastirma, hemsirelerin calisma ortamina iliskin degerlendirmelerini belirlemek amaciyla yapilmistir. Yontem: Kesitsel olarak yapilan bu calismanin orneklemini Ekim-Kasim 2014 tarihleri arasinda Cumhuriyet Universitesi Hastanesinde gorev yapan, calismaya katilmayi kabul eden ve veri toplama formlarini eksiksiz dolduran 174 hemsire olusturmustur. Veriler kisisel bilgi formu ve “Hemsirelik Is Indeksi-Hemsirelik Calisma Ortamini Degerlendirme Olcegi” kullanilarak toplanmistir. Bulgular: Hemsirelerin yas ortalamasi 32.09±7.09 olup, %86.8’i kadin, % 64.9 evli % 74.7’i lisans mezunu, %84.5’si kadrolu, % 32,2 sinin meslekteki calisma deneyimi 5 yil ve altindadir. Hemsirelerin % 79,9 bir sendika veya dernege uyedir. Olcekten alinan toplam puan ortalamasi X=2,16±0,49 olarak saptanmistir. Calismada erkeklerin, sozlesmeli calisanlarin, bir dernege veya sendikaya uye olanlarin ve calisma yili 5 yilin altinda olanlarin hemsirelik calisma ortamina yonelik tutumlarinin daha olumlu oldugu belirlenmistir (p 0.005) Sonuc: Hemsirelerin calisma ortamini genel olarak orta duzeyde degerlendirdigi ancak “insan gucu ve diger kaynaklarin yeterliligi” alt boyutunu olumsuz degerlendirdikleri saptanmistir. Anahtar Sozcukler: Hemsirelik, hemsirelik calisma ortami, hasta ve saglik calisani guvenligi