No, MBA in HR is not mandatory, it will only enhance your chances of getting selection & promotion at further tenure
Appropriate job knowledge is enough as per the post , however the basic qualification (Graduation is Required), its also depend upon the company & Your work experience.
20th February 2014 From India, Mumbai
Till now, what you have done like a mix fruit shake that exclude the important fruits.
21st February 2014 From India, Jaipur