Tips for people running around department getting jab (4)
I believe the answer is:
prod
'jab' is the definition.
(I know that jab can be written as prod)
'tips for people running around department' is the wordplay.
'tips for' indicates taking the first letters (letters at the tips of the words).
'around' becomes 'o' (I've seen this in other clues).
'department' becomes 'd' (abbreviation eg in MOD Ministry of Defence).
The initial letters of 'people running' is 'pr'.
'pr'+'o'+'d'='PROD'
'getting' acts as a link.
(Other definitions for prod that I've seen before include "Provide stimulation" , "Poke; reminder" , "Poke or spur" , "Push with pointed instrument" , "Stimulus" .)