Why it is effective communication necessary in the work organisation?

are you seriously asking why it is important to be able to effectively communicate in a work place? that seems to be what you are asking. I would think the answer would be pretty obvious. if you are not able to effectively communicate with others in your work place, no one will know what the correct thing is to do at any point in time. if management, for example, does not communicate well with staff, the staff will not know what is expected of them. yup staff members do not communicate with management, management may not be alerted to potential problems and issues in the workplace. this is kind of a self explanatory concept.