Fortunately, the solutions to this widespread depression are simple. According to the article, people in less developed nations tend to be ostracized and even jailed for admitting mental weaknesses like depression. Naturally, surveyed people in these countries tend to have fewer reported instances of depression. It's a prime example of market forces at work. Provide a disincentive for depression, and it will disappear.
Also, according to the article:
"In strikingly undeveloped countries, Kessler says, people don't talk about being fulfilled. They're often just focused on making it through the day."This just shows what I've been espousing all along. If you're keeping your workers busy enough, they don't have time to think. When they're too inundated with work to think, they don't have time to do non-productive things like get depressed. Idle workers are troublesome workers.
Finally, we need to dispel this misinterpreted notion of equality in this country. There are bosses and there are employees. If you're a grunt, accept that fact. When we can deflate expectations of the underlings, they can't become disappointed with their careers and will be far less likely to become depressed. Employees who know their place in the corporate hierarchy don't waste time claiming depression. They just play their role working for the company.