Kate arranged work in Kansas city (6)
I believe the answer is:
topeka
'kansas city' is the definition.
(I've seen this before)
'kate arranged work in' is the wordplay.
'arranged' indicates an anagram.
'work' becomes 'op' (common abbreviation for 'opus').
'in' means one lot of letters goes inside another.
'kate' anagrammed gives 'teka'.
'teka' enclosing 'op' is 'TOPEKA'.
(Other definitions for topeka that I've seen before include "state capital" , "Kansas City" , "Kansas capital" , "It stands on the Kansas River" , "Capital of 6" .)