Many of the company's content moderators have concerns about the inconsistency and peculiar nature of some of the policies.
Those on sexual content, for example, are said to be the most complex and confusing, the Guardian said.
Facebook had no specific comment on the report but said safety was its overriding concern.
"Keeping people on Facebook safe is the most important thing we do.
In other groups, some persons were sharing the location, number and the amount for online prostitution,” a hacker said.