The numbers may be skewed by retired people which is not absolutely clear in a lot of these data points when people casually cite them online (not saying your sources are).<p>Working poor is quite common in the US. With chronic unemployment where over time individuals face depression you would be better off correlating depression and low income with downward economic projections rather than free time. Rates of alcoholism and liquor sales may be closer approximations in areas where mental health figures are unreliable due to lack of availability among underserved communities (see: Native reservations, poor rural areas). Where I live, I might be the most depressed but so many do rather poorly economically but the region is consistently polled as rather high on happiness.