noun
exploitative company; sweatshop employer
Refers to a company that forces employees to work under harsh conditions, such as excessive unpaid overtime, harassment, or illegal labor practices. Often contrasted with ホワイト企業 (white company).
彼はブラック企業で毎日深夜まで働かされている。
He is made to work until late every night at a black company.
新卒でブラック企業
I ended up joining a black company right after graduation and quit soon after.