Yes for GBO (OG-III) a minimum of 16 years of education is mandatory in the fields of business, commerce and economics. Initially OG-III are hired as TBO (Trainee Banking Officer) with the package of 25K and after completion of 3 months training posted to branches as GBO. But this time their criteria is not matchable to OG-III. So it might possible that they would be hiring GBO as OG-IV because already too many people already hired as OG-IV Cash Officers since 2 years and among them more than 90% of the people are MBAs. So lets see....what happens!

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