remedial measure; corrective action; countermeasure
A measure taken to deal with a problem or its aftermath; often used in formal or news contexts.
The government is hurrying to take remedial measures for the accident.
In response to the scandal, the company announced corrective measures.
Compound of 善後 (ぜんご, 'aftermath; dealing with the aftermath') and 策 (さく, 'plan; measure').