Evolution of stressors for healthcare workers over the COVID-19 pandemic

Many studies have documented exposure to psychosocial factors in healthcare workers (HCWs) during the coronavirus disease 2019 (COVID-19) pandemic. Few have done it prospectively with open-ended questions.

To describe the evolution of stress factors reported by HCWs during the pandemic.

A prospective cohort of 4964 HCWs (physicians, nurses, healthcare aides and personal support workers), from four Canadian provinces, received four online questionnaires between the spring 2020 and 2022. Responses to an open-ended question on stressful events were coded into 25 stressors. Multilevel logistic regressions assessed trends in stressors, and the effect of gender, occupation and age.

In 2020, 91% of participants reported at least one stressor compared to 51% in spring 2022. Overall, eight stressors were reported 1000 times or more among 16 786 questionnaires. Five stressors decreased over time: fear of COVID-19, problems with personal protective equipment, changing guidelines, management of difficult cases and changes to work routine. Conversely, an increasing trend was noted for volume of work, and poor behaviour from the public or colleagues. Difficulties managing patients' deaths remained steady. Changes in stressors over time were similar by gender, professional role and age group, although the reporting of some stressors varied within subgroups.

Reporting of most stressors decreased over the pandemic, except for stressors arising from the changing demands on staff and patients as the pandemic progressed. Such changes in workplace psychosocial factors need to be addressed by prevention programmes to ensure an appropriate support response to the needs of HCWs.