This sort of organizational structure is called a matrix structure.
Explanation:
The representation of a corporation in which monitoring interactions are defined as a grid, or matrix, instead of in conventional hierarchies is understood as a matrix organizational framework. In another terms, workers have multiple responsibilities to report-usually both to a functional boss and to a manager of commodity. Here analyst at Chase Manhattan Bank's corporate finance division has been allocated to an interdepartmental project involving a large client. Thus he need to answer two separate bosses from his department and project manager.
