Translation guide
A wildcat strike is an unofficial work stoppage not authorized by union leadership. In Japanese, this is typically expressed with set phrases rather than a single word.
To refer to a strike that is not sanctioned by the union.
Both スト and ストライキ mean 'strike', but スト is more common in compounds like 山猫スト. ストライキ is slightly more formal and often used in news reports.
A strike was held.
The union condemned the unauthorized strike.
Uses 争議 (dispute) instead of スト. Less common but still seen in labor literature.
The wildcat dispute is becoming prolonged.