Добрый день! текст ниже.
на фирменном бланке + печать/подпись директора:

We hereby confirm, that Mrs. ____ with Passport number ____, is an employee of our company in the position of ____ with an annual salary of € _____.
Mrs. _____ has started working with us on (FULL DATE)
For any further inquiries, please do not hesitate to contact us.