I refuse to look after other people's belongings.
I refuse to look after other peoples' belongings.
Which is correct?
We're talking about the belongings that potentially belong individually to every other person.
Not a dupe of 'people' vs 'peoples' as this is talking about the possessive of 'peoples'.
Best Answer
People as a plural of person is a mass noun, and we don;t use a plural -s. So when forming a possessive, we only add the 's:
However, people can also be countable, when we refer to a(n ethic) group of persons: the Belgian people, the British people. Although a bit contrived, you could be referring to belongings that are the property of such groups.
For example: