Spectacular action of disenchanted workers (8)
I believe the answer is:
striking
I believe this clue is a double definition.
'spectacular' is the first definition.
(synonyms)
'action of disenchanted workers' is the second definition.
(workers going on strike)
(Other definitions for striking that I've seen before include "Remarkable; hitting" , "going like the clappers?" , "Conspicuously impressive" , "Prominent" , "not working" .)