Whistle blowing is beneficial for the organization or for employees of that organization?

 agreed with MrDuncan Robertson

Agree with Mr.Duncan Robertson.Whistle Blowing usually exposes the irregularities in organization activities due to lack of conformance to laws or standards.Usually it costs employee its Job and Organization its reputation and business.Check Enron & other corporate scandals for further detail

Usually neither.  Whistleblowing is most commonly beneficial to the customers, or is in the Public Interest.

Whistle Blowing is a concept where an employee within the organization informs relevant function regarding non or mis following of a policy or  a threat which could endanger the organization, its function or policy. 

Primarily, this mechanism focuses on highlighting those issues which are a threat to the organization. Thus primarily this mechanism will be of a greater benefit to the organization. However, secondarily the whistle blowing mechanism is beneficial for the employees of the organization who can live and work in a sustainable environment as a result of the trickle down effect.