Force workers' leader to take capital in industrial action (2-4)
I believe the answer is:
go-slow
'industrial action' is the definition.
(type of union action in the UK)
'force workers' leader to take capital' is the wordplay.
I cannot really understand how this works, but
'force' could be 'g' (short for gravity) and 'g' is located in the answer.
'capital' could be 'oslo' (capital of Norway) and 'oslo' is found in the answer.
A single letter 'w' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Other definitions for go-slow that I've seen before include "Form of industrial action" , "Work-to-rule" , "Type of industrial action" .)