“…Besides, the unemployed scored higher in abuse of alcohol, tobacco and other harmful substances, which may further develop into substance abuse without a proper coping strategy (Bocchino et al, 2021). Within all the named symptoms of the unemployed syndrome, losing the meaning of life and individual functioning is the most struggling for many individuals, which is the culprit that can give people the biggest blow (Thill et al, 2020;Levy and Cohen-Louck, 2021;Rosen and Stenbeck, 2021). As employment and personal/household income are the most direct factors related to individuals' mental health conditions in their daily lives, we summarized existed studies that compared unemployed individuals and employed individuals regarding their mental health problems in Table 2 (Banna et al, 2020;Liu et al, 2020;Patabendige et al, 2020;Ueda et al, 2020;Verma and Mishra, 2020;Hassannia et al, 2021;Munoz-Navarro et al, 2021) and the association between income and mental health problems in Table 3 (Banna et al, 2020;Naser et al, 2020;Que et al, 2020;Shi et al, 2020;Verma and Mishra, 2020;Munoz-Navarro et al, 2021;Zheng et al, 2021a).…”