Unfair treatment in our department

Dear Sir/Madam,

Kindly review & check the draft letter below. I would appreciate for your necessary corrections

Thanks in advance.

Your's faithfully

To HR

Sub: Unfair treatment in the office

Dear Sir/Madam,

I am writing this letter to bring your attention that, Our tender department have facing severe issues of favoritism & nepotism last 3 yrs. We were 4 staffs under one super visor and that time the work was well organize and running very smoothly. One new staff joined with us 2 yrs ago , hence he has a family relations with our supervisor the act of favoritism & nepotism is now a highly concerned of our department. And a very bad impact fallen to our daily routine job which causes low productivity.

The followings concerns are as follows:

1. i) Lack of fairness in task distribution between all staff,
2. ii) Lack of carrying equal weight of job between all staff

III) Lack of proper coordination between all staffs

Kindly intervene in this matter, your help will be very much appre