Office worker gets round at speed (5)
I believe the answer is:
tempo
'speed' is the definition.
(I've seen this before)
'office worker gets round' is the wordplay.
'office worker' becomes 'temp' (I've seen this before).
'gets round' becomes 'o' (I've seen this in other clues).
'temp'+'o'='TEMPO'
'at' is the link.
(Other definitions for tempo that I've seen before include "Speed at which a musical composition is to be played" , "Musical time" , "Pace of a musical piece" , "Speed of a musical piece" , "Pace - pacing" .)