“常年聘请”
用英语怎么说？

Jan: Michael, please. That's not my sense of humor. Michael: Okay. Jan, Mr. O'Malley, this is my lawyer, James P. Albiny. Jan: What? Michael: I believe you may recognize his face from the billboards. He specializes in free speech issues. Albiny: And motorcycle head injuries, worker's compensation, and diet pill lawsuits. Michael: This guy does it all. Jan: Excuse me, Michael. Mr. O'Malley is your lawyer. Michael: What? Jan: Mr. O'Malley is our corporate lawyer. We have him on retainer to protect the company as well as upper-level management, such as yourself. Michael: So I'm not in trouble?

简：迈克尔，求你了。那不是我的幽默感。迈克尔：好的。简、奥马利先生，这位是我的律师，詹姆斯·P·阿尔比尼。简：什么？迈克尔：我相信你们可能在广告牌上见过他的脸。他专精于言论自由诉讼。阿尔比尼：还有摩托车头部受伤、工伤赔偿，以及减肥药诉讼。迈克尔：这家伙样样精通。简：不好意思，迈克尔。奥马利先生才是你的律师。迈克尔：什么？简：奥马利先生是我们的总公司律师。我们常年聘请他，是为了保护公司以及像你这样的高层管理人员。迈克尔：所以我没有麻烦？