An employer’s letter is a letter from your employer addressed to the Controller of Immigration providing the following data:
The letter should not be dated more than one month before the date of PR application.
Whereas, Annex A form is meant to provide the employer’s information to the ICA. Your employer must state the company’s name, address, authorized paid-up capital, business entity type, and ownership. The employer must also state the nature of the company’s activities and business. For instance, if it is a manufacturing industry, they must provide information about the types of products manufactured there, etc. It also contains data, like the date of the commencement of the applicant’s current employment, position held, period of employment with the company, and monthly salary.
Both forms are different and provide different information except for some basic data. For example, an employer’s letter provides information about the applicant, whereas Annex A form is more focused on details about the company.