Depression in the workplace extracts a cost--$44 billion a year. Yet half of employees who self-identify as suffering from depression don't tell their bosses about the disorder for fear of losing their jobs.

The employer coalition Employers Health released results of its survey, the “Impact of Depression at Work Audit,” and offered these chilling observations:

• 23 percent of U.S. respondents indicated they have been diagnosed with depression in their lifetime;
• Mental illness short-term disability claims are growing by 10 percent annually;
• 40 percent of those patients reported taking time off of work – an average of 10 days a year;
• 58 percent of employees surveyed who have been diagnosed with depression indicate they had not told their employer of their disorder;
• 49 percent felt telling their employer would put their job at risk;
• More than 35 percent of managers reported receiving no formal support or resources to guide their employees.

“Depression is significantly impacting productivity in the workplace,” the coalition said in a report. “In fact, 64 percent of survey participants reported cognitive-related challenges, as defined by difficulty concentrating, indecisiveness and/or forgetfulness, have the most impact on their ability to perform tasks at work as normal. Presenteeism (being at work, but not engaged/productive) has been found to be exacerbated by these challenges related to thinking on the job.”

The coalition said depression extracts about $100 billion annually from U.S. employers including $44 billion a year in lost productivity alone.