homeworker; person who works from home
Refers to someone who does paid work at home, often piecework or side jobs, rather than remote corporate employment.
While raising her children, she works from home addressing envelopes as a homeworker.
在宅勤務 is remote work for a company, while 内職 often implies independent piecework or side jobs done at home.
Compound of 内 (inside, home) + 職 (job, occupation) + 者 (person). The term 内職 originally referred to side work done at home, and 内職者 is the agent noun.