Self-employment; running one's own business rather than being employed by a company.
父は小さな工場を経営していて、ずっと自営業だ。
My father runs a small factory and has been self-employed for a long time.
自営業は売上の変動があるため、収入が安定しにくいことがある。
Because self-employment involves fluctuating sales, income can be unstable.
自営業の開業には税金や保険の手続きが必要だ。
Starting a self-employed business requires procedures for taxes and insurance.