What is the difference in terms of responsibility and authority between public sector management and private sector management?

I do not think that it is very different .. The flexible management style is interact with the system in accordance with the laws of the organization to achieve the necessary efficiency .. but the public sector sometimes sets laws and regulations that hinder that flexibility .. Here the professional must use of the smart method to overcome those disabilities We must not know the impossible, as well as some private sector have the same problem

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For any position all work under job description any body have to perform is responsibily , All the action of yout subordinates for which you check evaluate & approve is your athority . 

Thanks for Invitation,

Agree with our colleague's Shady, as responsibilities and authority in both public or private sector organizations are delegated from the equity owners to management people, in order to allow them to operate day-to-day organization's work and to achieve required goals and objectives.

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I support my colleague Shadi's answer