Report on insurance (5)
I believe the answer is:
cover
I believe this is a double definition.
'report on' is the first definition.
(synonyms)
'insurance' is the second definition.
(I've seen this before)
(Other definitions for cover that I've seen before include "Conceal a thing or fact - . . . . . up" , "Extend over (an area)" , "Encompass" , "Disguise" , "Fielder" .)