What does redundant mean? Can a person be redundant?
to no longer be of any use.
Yes they can be made redundant where their position is no longer needed in the company.
More than needed.
In the sentence "This is a single unpaired sock" there is redundancy in the form of twice saying the same (also known as tautology).
A person can be "made redundant", meaning he is no longer needed for a certain job at a certain office or factory (there are too many in that job at that place).
Calling a person redundant (overall) would not be a very nice thing to say: It would mean the person is good for nothing and might as well die.