also: いちにんがいしゃ
noun
one-man company; sole proprietorship company
Business term for a company where a single individual is the sole owner, director, and employee. Often used in contexts of small startups or solo entrepreneurs.
彼は一人会社を設立して、フリーランスの仕事を始めた。
He set up a one-man company and started freelance work.
一人会社でも、きちんと経理をしなければならない。
Even a one-man company must keep proper accounts.