Como dizer "Carta de apresentação (trabalho)" em inglês

Job seekers frequently send a cover letter along with their CV or employment application as a way of introducing themselves to potential employers and explaining their suitability for the desired position. Employers may look for individualized and thoughtfully written cover letters as one method of screening out applicants who are not sufficiently interested in their position or who lack necessary basic skills.

http://en.wikipedia.org/wiki/Cover_letter