A 22 year-old contract employee has been restive since before work started
A 22 year-old contract employee
22歳の派遣社員
~since before work started
仕事が始まる前から~
A 22 year-old contract employee has been restless since before work started
22歳の派遣社員は仕事が始まる前からそわそわしていた
restiveはあまり使わない表現ですね。個人的にrestlessの方が随分自然に感じますね。
ご参考になれば幸いです!