Occupational Disruptions during the COVID-19 Pandemic and Their Association with Healthcare Workers’ Mental Health

Background: The COVID-19 crisis has caused prolonged and extreme demands on healthcare services. This study investigates the types and prevalence of occupational disruptions, and associated symptoms of mental illness, among Australian frontline healthcare workers during the COVID-19 pandemic. Methods: A national cross-sectional online survey was conducted between 27 August and 23 October 2020. Frontline healthcare workers were invited to participate via dissemination from major health organisations, professional associations or colleges, universities, government contacts, and national media. Data were collected on demographics, home and work situations, and validated scales of anxiety, depression, PTSD, and burnout. Results: Complete responses were received from 7846 healthcare workers (82.4%). Most respondents were female (80.9%) and resided in the Australian state of Victoria (85.2%). Changes to working conditions were common, with 48.5% reporting altered paid or unpaid hours, and many redeployed (16.8%) or changing work roles (27.3%). Nearly a third (30.8%) had experienced a reduction in household income during the pandemic. Symptoms of mental illness were common, being present in 62.1% of participants. Many respondents felt well supported by their workplaces (68.3%) and believed that workplace communication was timely and useful (74.4%). Participants who felt well supported by their organisation had approximately half the risk of experiencing moderate to severe anxiety, depression, burnout, and PTSD. Half (50.4%) of respondents indicated a need for additional training in using personal protective equipment and/or caring for patients with COVID-19. Conclusions: Occupational disruptions during the COVID-19 pandemic occurred commonly in health organisations and were associated with worse mental health outcomes in the Australian health workforce. Feeling well supported was associated with significantly fewer adverse mental health outcomes. Crisis preparedness focusing on the provision of timely and useful communication and support is essential in current and future crises.


Introduction
Crises such as the COVID-19 pandemic impose prolonged and extreme demands on healthcare systems and healthcare workers (HCWs). The second wave of the Australian COVID-19 outbreak occurred primarily in Melbourne, Victoria, between June and October

Study Design and Sample
A nationwide, anonymous, cross-sectional online survey of self-identifying frontline HCWs in Australia was conducted between 27 August and 23 October 2020. Australian healthcare workers were recruited through multiple strategies. Information regarding the survey was emailed to CEOs and departmental directors of frontline areas (emergency medicine, critical care, respiratory medicine, general medicine, infectious diseases, palliative care, and hospital aged care) of all public hospitals throughout Victoria and to multiple hospitals around Australia. Hospital leaders were asked to share the survey information with colleagues. Thirty-six professional societies, colleges, universities, associations, and government health department staff also disseminated information about the survey across Australia. Additionally, the study was promoted through 117 newspaper advertisements, 8 television and radio news items, and 30 social media sites. Participants did not need to have cared for people with COVID-19 to take part.

Data Collection
Data were collected at a single time point. Participants completed the online survey via direct link or through a purpose-built website (https://COVID-19-frontline.com.au/). Data were collected and managed using REDcap electronic data capture tools [12]. Information collected included demographics, home life details, professional background, work arrangements, the impact of the pandemic on employment and finances, organisational leadership, occupational change including redeployment (change in work area or location) and role change, exposure to COVID-19, and health and recreational habits (Supplement S1). Most questions were in single-or multiple-choice format, with free-text responses for more detailed answers. Five validated psychological measurement tools were used to assess symptoms of mental illnesses, including: anxiety (Generalised Anxiety Disorder (GAD-7)), depression (Patient Health Questionnaire (PHQ-9)), post-traumatic stress disorder (PTSD) (abbreviated Impact of Event Scale (IES-6)), and burnout (abbreviated Maslach Burnout Inventory (MBI); subdomains of emotional exhaustion, depersonalisation, and personal achievement). Burnout on the MBI is indicated by higher scores on the emotional exhaustion and depersonalisation subdomain and lower scores on the scale of personal achievement. Resilience was assessed using the abbreviated 2-item CD-RISC-2 scale. For each mental health scale, outcomes were merged into dichotomous categories as follows: depersonalisation: 0-3 low, 4-18 moderate to high; emotional exhaustion:

Occupational Environment and Disruptions
Over a third (3063, 39.0%) of participants were currently working with people infected with COVID-19, and two-thirds (2891, 60.5%) anticipated working with people infected with COVID-19 in the future. Nearly half (42.3%) of participants reported working increased paid (20.8%) or unpaid (21.5%) hours in their role. Redeployment (16.8%) or a change in work role (27.3%) were not uncommon ( Table 2). Three-quarters (5883, 74.4%) believed they had received timely and useful communication regarding the pandemic from their organisations, and two thirds (5352, 68.3%) believed their workplace actively supported their well-being and mental health during the pandemic.

Predictors of Occupational Change
In the multivariate regression model, independent predictors of experiencing a change to work role included: being a nurse or allied health worker, working in other frontline areas (including paramedicine, radiology, pharmacy, pathology and clinical laboratories, or other areas compared to ED), and having a prior mental health diagnosis (Table 3). Independent predictors of being redeployed during the pandemic included having less than 5 years' work experience, having a friend or family member infected with COVID-19, living with three or more people aged over 65, having concerns about income, being in a nursing or allied health role, currently working with COVID-19 patients, and certain frontline areas (anaesthetics, perioperative or surgical, medical specialties, other nonmedical roles, and primary care). People with 6-10, 11-15, and ≥15 years' experience since graduation (vs. ≤5 years), with children at home, and reporting altered income, had reduced odds of being redeployed.
Independent predictors of reporting working additional paid hours since the pandemic commenced included: female sex, age between 20-30, 31-40, and 41-50 (compared to over 50 years), and in a nursing role. By contrast, people working in allied health and certain frontline areas (anaesthetics, perioperative or surgical, and medical specialty areas compared to ED staff) had reduced odds of working increased paid hours.
Independent predictors of reporting working additional unpaid hours included having a family member or friend infected with COVID-19, and working in certain frontline areas (primary care, a medical speciality, or a non-medical frontline area). The odds of working additional unpaid hours increased with years of experience since graduation. Nurses and allied health workers (compared to doctors) had reduced odds of working additional unpaid hours.

Predictors of Individual Preparedness
Independent predictors for receiving training to care for people with COVID-19 included: nursing role, working in ICU, and currently working with people infected with COVID-19. Women, allied health staff and people working in certain frontline areas (primary care and other frontline areas) had reduced odds of receiving training (Table 4). Independent predictors for having confidence in their ability to care for people with COVID-19 included: living in the Australian state of Victoria, having 11-15 or more than 15 years' experience since graduating, nursing role, working in ICU, and currently working with COVID-19 patients. Women, those age 41-50 years (compared with over 50), people with a prior mental health diagnosis, people working in a regional area (compared to metropolitan), and certain frontline areas (anaesthetics, perioperative or surgical, other non-medical roles, and primary care) had reduced odds of having confidence in caring for people with COVID-19.
Independent predictors of being confident using PPE included: living in the Australian state of Victoria, nursing role, and currently working with people infected with COVID-19. Conversely, people aged 30-50 years (compared with over 50), those with prior mental health diagnoses, living in regional areas, and primary care workers had reduced odds of being confident using PPE. Independent predictors of desiring further training regarding COVID-19 management or PPE usage included: female sex, working in regional locations, and working in primary care. People in age categories under 50 years, living in Victoria, working in ICU, with nursing, allied health or other roles (compared to doctors), and those currently working with COVID-19 patients had reduced odds of desiring further training.
Independent predictors of being less confident in a new area after redeployment included: having a friend or family member infected with COVID-19, nursing role, and working in anaesthetics, perioperative, or surgical areas. There was no association between other personal or occupational co-variates and confidence after redeployment.
Independent predictors of being confident in a new role after role change related to the pandemic included: having 6-10 years of postgraduate experience or over 15 years postgraduate experience. People working in anaesthetics, perioperative, or surgical areas had reduced odds of being confident in a new role. There was no association between other personal or occupational co-variates and confidence after role change.

Occupational Change and Mental Health
A third of participants (2389, 30.4%) had a diagnosed mental health condition prior to the pandemic and many experienced self-reported mental health concerns since the pandemic, primarily anxiety (4875, 62.1%), burnout (4575, 58.3%), and depression (2175, 27.7%). Validated scale-assessed symptoms of moderate to severe anxiety or depression were seen in a third of participants (anxiety 2216, 28.3%; depression 2192, 28.0%). Burnout symptoms were particularly prevalent, with 70.9% (5458) experiencing moderate to severe emotional exhaustion and 37.4% (2877) experiencing moderate to severe depersonalisation. A third of participants scored low for the personal achievement subdomain of burnout (2243, 29.1%). Self-reported PTSD was relatively low at 5.4% (427), though nearly half (3155, 40.5%) showed moderate to severe symptoms of PTSD in the validated IES-6 instrument.
Perception of workplace support was the most frequent mediator of mental health outcomes (Figure 1 and Supplementary Table S1). Feeling well supported at work was significantly associated with reduced odds of experiencing moderate to severe mental health symptoms on all measured outcomes (anxiety: OR 0. alisation subdomain of burnout: OR 0.59, CI 0.49-0.71, p = 0.001; and emotional exhaustion subdomain of burnout: OR 0.43, CI 0.34-0.55, p < 0.001). Feeling well supported at work was significantly associated with increased odds of experiencing personal achievement (OR 1.38, CI 1.13-1.68, p = 0.001). Satisfaction with the usefulness and timing of workplace communications was independently associated with reduced odds of depersonalisation (OR 0.70, CI 0.57-0.84, p < 0.001) and increased odds of personal achievement (OR 1.29, CI 1.05-1.58, p = 0.015).

Discussion
This is the largest, cross-sectional study globally to quantitatively measure the impacts of the COVID-19 pandemic on occupational disruption, pandemic preparedness, and mental health, as reported by Australian frontline HCWs. Disruption to healthcare services during the pandemic has been profound, with many workers experiencing changes in their working hours, job role, and household income. Although HCWs in direct contact with COVID-19 patients were more likely to report having received adequate training regarding COVID-19 patient care and PPE use, many workers felt a need for additional training and lacked confidence in their ability to care for patients and use PPE safely. A significant portion of participants was unsatisfied with the support or communication provided by their workplaces during this time. Personal, social, and professional predictors have been identified for occupational change, individual preparedness, and mental health problems.

Prevalence of Occupational Change and Individual Preparedness
Working increased unpaid hours during COVID-19 was associated with working as a doctor and additional years of experience since graduation, which is a surrogate for seniority in the role. The current survey did not identify what type of work the additional unpaid hours constituted. However, these additional hours may reflect increased pandemic response coordination and leadership responsibilities. While working unpaid hours has been the 'norm' for doctors for some time [21], this practice is untenable and has long-term consequences on mental health and workforce retention [22,23]. Furthermore, there may be legal ramifications, as expecting people to work unpaid is unlawful [24]. In Australia, the junior doctor workforce recently launched legal action to challenge this practice and demand payment for all hours of work [25].
People with children at home were not more likely to change their employment status or work hours after the onset of COVID-19. This may be reflective of policy choices in Victoria to keep schools and childcare open for frontline workers, reducing their need to undertake additional caring responsibilities [26]. A policy implication statement prepared by McHugh [27] indicates that current US emergency response plans rely on an overestimation of nursing capacity based on the presumed availability of temporary or pool nurses who often also hold a permanent appointment elsewhere. Given the higher likelihood of nurses to have increased their paid hours during COVID-19, it is likely that Australian healthcare systems rely on a similarly overstretched workforce.
Training was more likely to be available to those who currently worked with COVID-19 patients as well as HCWs in the Australian state of Victoria, which was where the majority of cases during the second wave of the Australian pandemic occurred. The need for additional training expressed by half of the participants and the high rates of people anticipating working with COVID-19 patients in the future indicates that training may be reactive rather than proactive. Insufficient pre-emptive training in preparation for crisis situations as a barrier to HCW preparedness is not unique to Australian HCWs or the COVID-19 pandemic [10,[28][29][30]. Competency-based training programs for nontechnical skills have been shown to significantly improve learning outcomes [31] and increase HCW confidence in resource management when faced with a crisis situation [32]. The rapid development of the COVID-19 outbreak in Australia limited the ability to preemptively train HCWs beyond those in the most direct contact, though lessons from this pandemic should inform competency-based programs in preparation for ongoing and future infectious disease outbreaks.

Impact on Mental Health
Two key occupational factors emerged in the analysis of predictors for poorer mental health outcomes during COVID-19: perception of workplace support and communication and availability of training or confidence in caring for people infected with COVID-19. Feeling well supported by their workplace was a key independent predictor of mental health outcomes, being associated with approximately half the risk of experiencing moderate to severe anxiety, depression, burnout, and PTSD. The importance of workplace support is well established in the literature [9,33,34]. Although workplace support has an important buffering effect on adverse mental health outcomes during crises for HCWs, these supports are often unavailable or under-utilised. The current study found that 16.2% (875) of participants felt somewhat or very unsupported. This is consistent with surveys showing that 12% of Belgian HCWs had a negative experience when seeking support from their workplace during COVID-19, and 15% did not seek support at all despite feeling a need to do so [34].
In addition to support, the communications provided by healthcare organisations are an opportunity to safeguard HCWs. Those who were satisfied with the usefulness and timeliness of communications were less likely to experience depersonalisation and more likely to have a higher sense of personal achievement. Unclear communications have previously been shown to erode HCWs' sense of trust in their workplace leadership and reduce their willingness to respond in a crisis [35][36][37]. Empowering nurses to hold leadership roles during crises is essential, as they occupy a unique space, are trained in emotional support and conflict resolution, and may have insights that are not apparent to non-frontline workers [33,38].
Those who experienced changes in their work role or were redeployed to a new work area were at increased risk of depression, PTSD, and emotional exhaustion. Similarly, those working additional unpaid hours were more likely to experience emotional exhaustion. This is consistent with prior work on Australian HCW cohorts indicating that the risk of experiencing a common mental disorder doubles when work hours exceed 55 h per week [23], and each additional hour represents a 3% increase in the odds of experiencing psychosocial distress [39]. The need to redeploy or alter the work roles of some HCWs during a crisis are likely unavoidable, though the increased risk of poorer mental health outcomes for these workers highlights the need to ensure adequate supports are available. Targeted training and mental health support for these workers may help reduce the impact of crises such as COVID-19 on these workers [40].
HCWs who indicated a need for additional training were more likely to experience depersonalisation, whilst those who felt confident to care for COVID-19 patients were less likely to experience PTSD symptoms. This is consistent with studies showing that HCWs performing tasks outside their scope of training due to resource scarcity are at increased risk of distress [41]. Although training opportunities are generally well provided, there may be a gap in the communication about, or accessibility of, these training opportunities to all HCWs. Previous work has shown that despite high levels of willingness, up to a third of HCWs are unaware of where or how to access additional training [10].

Strengths and Limitations
The large sample size in this study enabled a detailed examination of occupational change and the association with mental health. The demographic breakdown of the participants was broadly female, though this is representative of the Australian workforce, which is 75% female [18][19][20]. The survey did not specifically enquire about increased at-home duties as a form of unpaid working hours, and future studies should address this, as women and caregivers are more likely to perform high levels of unpaid work in the home, particularly during COVID-19 [42,43].
Calculation of response rate was not possible due to the wide dissemination of the survey. Selection and response bias in this voluntary survey may result in over-or underreporting of occupational change or mental health symptoms. Validated surveys to detect symptoms of mental illness were used in lieu of clinical diagnoses, as is standard practice in surveys exploring psychosocial effects of COVID-19 on health workers [44][45][46]. It was not possible to establish baseline data on mental health symptoms pre-pandemic in this cohort of Australian frontline workers due to the unexpected nature of the pandemic. However, in this study, the prevalence estimates of mental health conditions reported during the pandemic are much higher than those reported in earlier studies in non-pandemic times [47][48][49][50]. The single time point was selected to minimise the burden on HCWs, although this precludes longitudinal examination of mental health trends during the pandemic. Longitudinal research is urgently required to better understand any persisting occupational changes and associated psychosocial effects on HCWs. Occupational change and associated worsening of mental health may have important ramifications for patient safety and workforce retention.

Conclusions
This study reveals significant disruption to the working conditions of Australian frontline HCWs during COVID-19 with associated impacts on mental health. Useful and timely organisational support and communication were two of the strongest factors in mitigating impacts on mental health. Long-term, evidence-based policies and practices that focus on organisational and personal preparedness are needed to safeguard the healthcare workforce during the ongoing COVID-19 pandemic and in future crises 6.