temporary employee (esp. from an agency); temporary worker; agency temp
派遣社員として働き始めた。
I started working as a temp agency employee.
その会社は派遣社員の割合が高い。
That company has a high proportion of temp workers.
派遣社員に正社員と同じ研修を受けさせている。
They have temp workers go through the same training as full-time employees.