The amount of detail provided in the letter will review your level of enthusiasm about the candidate. A few generalized statements suggest a satisfactory performance. While longer paragraphs of meaningful description indicate that the former employer believes the candidate has superior qualifications.
(Company's phone number)
Dear (Ms/Mr. Brown:)
Jane Doe has worked directly under my supervision for the past six years.
I will indeed be sorry to lose her services when she moves to San Francisco next month. But I agree with her decision and feel she is the right person for the position she is aspiring with your company.
Ms. Doe is a productive contributor to team efforts as well as a self-starter. Besides having a high degree of integrity and a cheerful personality, she is one of those rare individuals who can both follow instructions and take initiative, as appropriate. She is strong in time management and her competence extends beyond the skills for which she was originally hired. (Provide an example of a well performed assignment carried out by the recommended.)
Seldom have I been able to make such an enthusiastic recommendation regarding an employee. I have no hesitation in advising you to hire Ms. Doe.
A letter of recommendation for employment should not exceed one page.
It is always a good idea to have a letter of recommendation ready when applying for a new job.