Success in the work environment depends on everyone's contribution. That's why no one in the workplace can afford to ignore depression.

This year, more than 19 million American adults (9.5% of the population) will suffer from this often misunderstood disorder. It is not a passing mood. It is not a personal weakness. It is a major-but treatable-illness. No job category or professional level is immune, and even a formerly outstanding employee can be affected.

The good news is that, in more than 80% of cases, treatment is effective. It enables people with depression to return to satisfactory, functioning lives. And nearly everyone gets some degree of relief. Treatment includes medication, short-term talk therapy, or a combination of both.