Angry Sri Lankan POW’s cynical notion of work (10,3)
I believe the answer is:
parkinsons law
'cynical notion of work' is the definition.
I can't judge whether this defines the answer.
'angry sri lankan pow's' is the wordplay.
'angry' indicates an anagram.
'sri'+'lankan'+'pows'='srilankanpows'
'srilankanpows' with letters rearranged gives 'PARKINSONS LAW'.
Can you help me to learn more?
(Other definitions for parkinsons law that I've seen before include "Humorous dictum" , "In principle" , ""Work expands to fill the time available for its completion"" , "Facetious rule" .)