Depression has a significant negative impact on productivity and performance in the workplace. Depression affects cognitive functioning such as decision making, concentration, memory and problem-solving abilities.
I concur that the onus is on the employee, in conjunction with the employer, to seek remedies to enable the employee to deal with the treatment of depression, by use of medication (if necessary), therapy and life-style changes.
In general, employers fail to ensure that affected employees are encouraged and supported in seeking treatment, as employers generally do not have the knowledge as to how to deal therewith.
There is a stigma attached to depression and many employees who suffer therefrom fear disclosure of their condition, as it may lead to the termination of their services. The more depression is de-stigmatised and understood, the greater the chances that the employee will remedy the condition with the support of the employer.