✔ 最佳答案
For your reference:
TO WHOM IT MAY CONCERN
This letter serves to confirm Mr. XXX bearer of HKID card number: A123456 (0) is employed by our company as XXXX (職位) since 1 Jan 2003 (入職日期). Mr XXX present salary is HK$10,000 per month.
Should you have any question for the above, please feel free to contact the undersigned at 2345 2345 (聯絡電話).
Yours faithfully,
XXX