Formal term for a person who is employed by an employer; often used in legal, economic, or statistical contexts.
Laws to protect the rights of employees have been established.
This survey examines the average annual income of employed persons.
雇用者 means 'employer', the one who hires, while 被雇用者 means 'employee', the one who is hired.
従業員 is a more common, everyday word for 'employee', whereas 被雇用者 is more formal and often used in legal or statistical contexts.
Compound of 被 (hi, 'receiving' or 'passive prefix') + 雇用 (koyō, 'employment') + 者 (sha, 'person'). The prefix 被- indicates the subject is the recipient of the action, forming a formal term for an employed person.