NIMU (an acronym for the phrase "Not In My Unit"), or Nimu, is a pejorative characterization of opposition by unit members to a proposal for a new development because the customer is not assigned to their unit, often with the connotation that such members believe that the developments are needed but should be done by another unit. Opposing members themselves are sometimes called Nimus.
The NIMU concept may also apply more generally to people who advocate some proposal (for example, austerity measures like budget cuts), but oppose implementing it in a way that would require sacrifice on their part.
Nimby