The minimum elements of an EEWP are listed in 70E [2009] Section 130.1(B)(2).
Oddly enough, sign off by a ?qualified person? is not one of the requirements; however, an authorizing or responsible management, safety officer, or owner, etc. signature is required. See Section 130.1(B)(2)(11).
Note: I?m well aware that Annex J suggests the signatures of Electrically Quallified Persons but the Annex isn?t part of NFPA 70 requirements. I helped write it originally and Section 130.1, as well; responsible management signatory authority was something I insisted on.