h1b approved but come to USA at latter date

[bingunginter]

hi
I got the h1b visa approved. But something arise that I can not immediately arrive in usa. So my company agreed for me to come and work at latter date which is 4 month latter. Would that be a problem when I arrive at the immigration? What do you guys think I should do or prepare to avoid any problem?

Thank you

[txh1b]

Get a new offer letter when you travel with the new start date.