Common Interview Question “Were you in a situation where a colleague was not completing their share of the work? Did you report it to your manager? What actions did he take?” with answer for interview preparation

Were you in a situation where a colleague was not completing their share of the work? Did you report it to your manager? What actions did he take?

 I think reporting a colleague to the manager would be indulging in politics. If someone is not completing the given share of the workload, the manager will eventually understand it and will take the required action.