H1 validity starts 01Oct14, but I want to delay travel/work in US only in May'15. Implications?

Hi All,

This is a useful forum with many questions getting answered.

I got H1 stamped with validity from 01Oct2014 for a 3 year period. But due to unforseen circumstances it seems I will not be able to travel to US till mid-May’15.

Can someone advise me the implications to me / employer ?

Thanks in advance.