What do you need to get a Job-Visa?

Question

An Italian that wishes to work in the USA for a limited period, needs a job-visa.

In order to ask for a job-visa to the italian US embassy, I only need a written invitation from the employer?

Answer 1

the  italian citizen  needs to obtain certified copy of a job offer  including all experience  related

Answer 2

Provide a credible copy of invitation to work in the US and support it with pertinent documents such as work and school records.