Is it necessary for me to have a work experience of 3 years if I want to pursue MBA from IGNOU?

Yes, they expect some experience to provide admissions, means they give priority to them. Otherwise, you can also choose Bhartiya Vidyabhavan, Symbiosis or Pondicherry University for distance courses.

If you have a professional degree, then 3 years of experience is not a mandatory condition. For more information, you can visit the below mentioned link: http://www.ignou.ac.in/