a temporary/dispatched worker who is sent by an agency to work at a client company, typically under a contract for a limited period.
彼は派遣労働者として三ヶ月の契約で働いている。
He is working as a dispatched worker on a three-month contract.
派遣労働者は正社員と待遇が異なる場合が多い。
Dispatched workers often have different (usually lesser) employment conditions than regular employees.
新しい法律で派遣労働者の権利が強化された。
The new law strengthened the rights of dispatched workers.