“复职”常见的英文表达是 “resume one's post” 或 “return to one's post”，也可用 “reinstate sb. in their post/position”（侧重于被恢复原职这一动作） 。
resume one's post：强调重新回到原来的岗位继续工作。
例句：After a long leave, he will resume his post next week.（休了长假后，他将于下周复职。）
return to one's post：侧重于回到原来的工作岗位这一行为。
例句：She decided to return to her post as soon as she recovered from the illness.（她决定病一好就复职。）
reinstate sb. in their post/position：更正式，常用于描述某人被恢复原职的情况。
例句：The company decided to reinstate him in his former position after the investigation.（调查结束后，公司决定恢复他原来的职位。 ）