Answer:
Essential workers are workers that are..well...needed.
Step-by-step explanation:
Essential workers include people who we need in our daily lives. A medical professional would be a good example. If there were no nurses or doctors around, we'd fall extremely ill and possibly die.
Police officers and firefighters are definitely essential workers. Policeman prevent and stop crime. If there were no policeman, think of how chaotic the world would be. Firemen help put out fires. If there were no firemen, then your house would burn along with you in it.