BackgroundThe goal of health care systems is to ensure high quality of medical services provided, including patient safety. The intensive care unit (ICU) is an environment conducive to the occurrence of adverse events and medical errors because of the complexity of the care provided, the severity of the conditions of patients treated in these units and work often performed under stressful conditions.AimsAssessment of attitudes of nurses working in ICUs towards patient safety.Study DesignA cross‐sectional, descriptive study was conducted in a group of 214 nurses employed in ICUs in hospitals located in the southern part of Poland.MethodThe study used the Polish version of the Attitudes towards safety: (SAQ‐SF PL) questionnaire and an original questionnaire consisting of questions on socio‐demographic and professional data.ResultsThe overall SAQ score for the whole group was 61.89, 57.29 for adult ICU nurses and 68.20 for children's ICU. The surveyed nurses in general obtained the highest average results in terms of teamwork climate (TC)—66.92, while the lowest scores were given to the management—hospital management (PM)—45.08 and working conditions (WC)—57.56. job satisfaction (JS) positively correlated with the assessment of the TC, the assessment of the safety climate (SC), the assessment of the management staff (Head of Department) (PM), the assessment of the management staff (hospital management) (PM) and the assessment of work conditions (WC). A statistically significant, negative correlation was found between the assessment of JS and the assessment of stress recognition (SR) (r = −.20; p < .01).ConclusionsIn the surveyed ICU branches, there is a low SC, and it is related, among others, to the perception of WC and the role of the management staff. The level of JS among nursing staff mainly depends on the SC, the TC, WC and the support of the management staff.Relevance to Clinical PracticeThe results of the research presented here provide valuable assistance in identifying areas related to patient safety in ICUs. Managers' awareness of the importance of coping with occupational stress, WC or effective teamwork can help to improve staff attitudes and attitudes towards patient safety. When shaping a safe culture in a health care organization, it is important to remember that ensuring safe patient care is not only about programmes, standards or procedures, but safety is primarily about human resources—the staff involved in the treatment process—doctors, nurses, paramedics and physiotherapists. High awareness of safety at work, cooperation in an interdisciplinary team, assessment of safety culture at work and analysis and drawing conclusions may result in a real increase in quality and safety, and the patient will feel safer in ‘XX’ hospitals.