Greve
In short
A strike is a period of organised work stoppage by employees to protest against working conditions or pay.
In plain words
Workers stop doing their jobs to show their employer they are unhappy. They do this to force the boss to make changes, like giving more money or better hours.
A simple example
Train drivers refuse to drive any trains for a week. They do this to demand a pay rise that keeps up with the cost of living.
Why it matters
Strikes can stop essential services like transport or hospitals. They are a powerful way for workers to gain leverage during negotiations.
Easy to mix up
Do not confuse a strike with a lockout, where the employer stops the workers from entering the building.