Final answer:
The Dedicated and Decentralized HR structures are prone to isolation due to their focus on specialization and dispersion of HR functions, leading to communication barriers and a disconnect from central leadership.
Step-by-step explanation:
The two HR structures that both have the disadvantage of isolation are the Dedicated HR structure and the Decentralized HR structure. I
n Dedicated HR structures, HR personnel are exclusive to specific departments or business units, leading to specialized expertise but potentially creating silos within the organization. This can result in a lack of communication and collaboration across departments.
Similarly, Decentralized HR implies a spreading out of HR functions throughout the organization, which can lead to inconsistencies in policies and practices, and a disconnect from centralized leadership goals. Both structures risk creating barriers that can make the organization less responsive to changes.