“…It was found that between 70.6% ( 43 ) and 26% ( 38 ) of the subjects in the included studies showed sickness presenteeism. In addition, a number of factors may have also favoured presenteeism or sickness presenteeism, such as mental health-related factors [burnout ( 34 , 45 , 49 , 51 ), stress ( 33–35 , 38 , 42 , 44 , 45 , 47 , 49 ), depression ( 46 ), fear of COVID-19 ( 49 ), no well-being ( 16 , 40 ), cyberbullying ( 51 ), sleep disturbance ( 34 ), concern about having enough food ( 41 ), social isolation ( 38 ), and no resilience ( 38 )]; individual factors [poor marital relationship ( 31 ), health status ( 42 ), being young ( 38 ), attention-deficit/hyperactivity disorder symptoms ( 32 ), workers who experienced interrupted medical care ( 33 , 40 ), low physical activity ( 38 , 50 ), sedentary behaviours ( 52 ), having children ( 41 ), having health insurance ( 41 ), and having a chronic illness ( 38 )]; factors related to the situation caused by COVID-19 [confinement ( 45 ), having symptoms of respiratory infectious disease ( 48 ), not volunteering to work on the frontline ( 47 ), impact on business operations, loss of contract, and risk of bankruptcy ( 16 )]; and factors arising from working conditions [perceived organisational support ( 49 ), direct patient care ( 39 ), work functioning or task performance impairment ( 31 , 42 , 43 , 53 ), work fatigue ( 34 , 43 ), safety climate ( 22 ), workload ( 22 ), having no one to replace them ( 48 ), geographical distribution ( 48 ), transition from in-person to online modes of working ( …”