Insurance department
I believe the answer is:
claims
'insurance department' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for claims that I've seen before include "'Asserts, avers (6)'" , "States firmly, insisting on truth" , "Asserts as a right" , "Assertions that one has gained or achieved something" , "Requests as one's right" .)