This study aimed to examine factors influencing psychological well-being and support among healthcare professionals involved in adverse event investigations, complaints, medical errors, and patient injuries from January 2020 to March 2022. The second-victim experience and support tool (SVEST) was used to assess second-victim experiences and support resources. Non-probability purposive sampling was employed, and data were collected through a Monkey Survey sent via email to around 150 clinicians (physicians, nurses, and pharmacists). A total of 100 responses were received. The inclusion criteria required participants to have been involved in adverse event investigations, complaints, medical errors, or patient-related injuries. The SVEST, with 29 items measured on a 5-point Likert scale, evaluated their perceptions of second-victim experiences and support resources. Institutional support was positively perceived by 55.0% of participants, with 52.0% feeling a range of coping resources was available. However, 31.0% felt their well-being was not adequately prioritized. Nonwork-related support was crucial, with 57.0% relying on friends and family. Professional self-efficacy was impacted, with 46.0% feeling inadequate and 39.0% experiencing self-doubt. Turnover intentions were notable, as 39.0% expressed a desire to leave patient care, and 34.0% considered quitting due to stress. This study highlights the need for targeted support systems to address second-victim experiences among healthcare professionals involved in adverse events. Enhancing institutional support, professional self-efficacy, and access to coping resources is crucial. Policymakers and healthcare leaders can help mitigate stress, decrease turnover intentions, and promote psychological resilience by fostering a supportive work environment and providing comprehensive resources, healthcare organizations can improve clinician well-being, reduce stress, and enhance patient care quality.