Job Duties handed out to employees

[ClarkeS]

I have a question about the job duties/responsibilities letter. My company hands out to employees their jobs roles & responsibilities. It's not on an official letterhead, but in the corner of the page is the company logo, there's a date issued, name of the HR official that issued it, and name of the department head that approved it. The job title is listed and then the roles & responsibilities.

Would something like that be good enough with a letter from HR that states hire date, salary, and job title?