The most common and most likely answer to this crossword clue is the 8 letter word RESIDENT
I've seen this crossword clue in The Guardian
R
E
S
I
D
E
N
T
More clues leading to the result RESIDENT
- Team put in tenant's payment for occupant
- House physician makes chief executive powerless
- Householder with Hoover, perhaps, but no power
- Occupant let team inside
- Hotel guest is torn about team
- Citizen taking the pee out of Trump?
- With Pence gone, White House inhabitant’s now a kind of doctor
- Payment, including interest, for dwelling
- Team cuts lease for occupier
- Local chairman’s heading off
Buddy explains!

The straight part
We know that "occupier" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case occupier = resident.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RESIDENT mean?
RESIDENT noun- A person, animal or plant living at a certain location or in a certain area.
- A bird which does not migrate during the course of the year.
- A physician receiving specialized medical training.
- A diplomatic representative who resides at a foreign court, usually of inferior rank to an ambassador.
- A legal permanent resident, someone who maintains residency.
- Dwelling, or having an abode, in a place for a continued length of time; residing on one's own estate.
- Based in a particular place; on hand; local.
- Fixed; stable; certain.
- (of memory) Currently loaded into RAM; contrasted with virtual memory.
- The head spy in a rezidentura.