Read this with the articles around it
worker
「労働者」
A person employed at a business or office and paid wages, whatever the kind of job.
Defined inArticle 9, paragraph (1)· applies throughout the law
employermachine translation
「使用者」
The business owner, its managers, and anyone else acting for the owner in matters concerning its workers.
Defined inArticle 10, paragraph (1)· applies throughout the law