How To Write A Letter Asking For Job Recommendations . Use a standard business letter format and tone. Then, when asking your boss for the letter, mention the hard work that you put into the project. Letter Of For Former Employee • Invitation Template Ideas from howtostepmom.com Finish your introduction with a sentence or two highlighting some of the applicant’s key strengths or personality traits. Follow this with a sentence such as: Your letter should confirm that you believe the person is a strong candidate for the job with no reservations.