"Delegation" means that someone officially gives a person the right to perform their duties. This may be paid or unpaid.

"Delegation of authority" means that the person delegated to perform the work now has both the authority and the responsibilities assigned to them.

These delegations come in several degrees. A person may be delegated to perform the work, but not have the authority to perform in the capacity of using authority.

In many cases delegation is a formal arrangement, with the delegated person held liable for any work performed under that delegation, not the person delegating. Generally delegation is a form of promotion, with or without reward.

Job seekers note: delegations belong on your CV. They relate to your job skills and your experience of added responsibilities.