I joined as a customer service executive. Four months gone but still not assigned any work. Job description has also not been given by the company so far. I have, myself, created some roles and responsibilities and showed it to my senior manager. He said OK. I voluntarily took other work also related to the service. But still I feel that I have no work. My reporting Officer also doesnt convey anything to me. What can I do?
Create your own job, as you alread have began to do. You are proactive, and it's a rare and useful quality. As many people seem to need help there, and you are able to help, you can build yourself your own job, rather than waiting to be hit as a pool ball.
Be sure, just, from time to time, to go backwards and look at the coherence of the whole thing. Try to find underlying patterns to the tasks you are doing. Try to give a backbone to the job you are currently creating.
Other than that, someone who does not even need management, and still is useful, is a very valuable asset to have in any team. Build on this strength. Find potential improvements, and do apply them(staying coordinated with other workers, of course). Find useful tasks noone has the time to do. Enjoy your freedom, it's scarce in the corporate environment.
You are an executive? The word "executive" is your starting point and what you have to work with. As an executive, you are management and your job as a manager is to act in a support capacity and work with those above and below you so that they complete their tasks and achieve their individual and team goals consistent with the objectives of the firm. Hopefully, I am not sounding too much like a windbag at this point.
You need to construct a mind map of the needs and pain points of those above and below you so that you can efficiently give them the support they need. You also need to know the priorities of the firm so that you can prioritize your various tasks. You can't fit in the picture if you don't know what the picture is, and you can't know what the picture is unless you collect enough information to be able to draw that picture so that you finally know what the picture is.
Being a manager means you have to work with others so you'll have to network like crazy to get to know everyone, actively participate in meetings and volunteer to follow up on action items. Since no one is telling you much of anything, you'll have to literally create your own job from prefabricated pieces e.g. one-on-one's with your management, meetings, follow-ups on action items cited in meetings, emails or verbally, etc. Find something that you like doing, that you can be good at and that being at is valuable to your management and staff and become the goto person for that something. As a manager, you are the middle person and you are effective as a middle person to the extend that you can act as a faciitator.