USERRA Enforcement Improvement Act of 2007

USERRA Enforcement Improvement Act of 2007 - Amends provisions concerning uniformed services members' employment or reemployment rights or benefits to: (1) require complainants to be notified of their rights within five days after receipt of the complaint by the Secretary of Labor; (2) require investigation and resolution of complaints to be completed no later than 90 days after receipt of the complaint; and (3) impose a 15-day deadline on referral to the Attorney General or to the Office of Special Counsel of an unsuccessful effort to resolve a complaint against a state or private employer or a federal executive agency, respectively. Requires the Attorney General or the Special Counsel, as appropriate, to make a decision and provide notification concerning representation of a complainant within 45 days of a referral.

Modifies requirements for annual case reporting by the Secretary to include data of the National Committee for Employer Support of the Guard and Reserve and data concerning those with disabilities.

Requires the Comptroller General to make quarterly reports on claims processing.

Requires the Secretary to ensure that: (1) report information is categorized in a uniform way; and (2) the Secretary and the Secretaries of Defense and Veterans Affairs, the Attorney General, and the Special Counsel each have electronic access to case files reviewed under the uniformed services employment and reemployment rights provisions.