Followed workers tip-off - it's what the litigant did (6)
I believe the answer is:
ensued
'followed' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for ensued that I've seen before include "Resulted, followed" , "Romantic rendezvous" , "Happened afterwards or as a result" , "Came about as consequence" , "Befell" .)