There is no OFCCP requirement to print the EEO policy on letterhead. It would be sufficient to have it reviewed and distributed to your various sites. Note that there is specific information that needs to be incorporated into the policy statement that is found in the revised veteran and disability regulations. While there is no requirement to print and post the EEO policy on letterhead, it's a good practice to do so. It demonstrates your organization's commitment to the policy, and it helps to establish the credibility of the policy with regulatory agency's like OFCCP.