U.S. judge OKs class-action against Domino's Pizza

* Drivers say not reimbursed enough for operating vehicles

* Drivers say paid less than required minimum wage

* Domino's shares close up 1 cent

NEW YORK, July 1 (Reuters) - A Minnesota federal judge granted class-action status to Domino's Pizza Inc (DPZ.N) drivers who sued the chain for failing to sufficiently reimburse them for delivery costs, causing them to be paid less than the minimum wage.

U.S. District Judge Donovan Frank's ruling covers thousands of drivers in states other than California and New York from March 4, 2006 to the present.

The case was first brought on behalf of two Domino's drivers in Minnesota. A similar case is pending in the federal court in Brooklyn, New York.

Domino's said in court papers there was too much variation among the drivers in vehicles, routes, mileage and geographic regions involved to warrant grouping them together as a class.

The Minnesota lawsuit was filed against Domino's Pizza LLC, an operating unit of Domino's Pizza Inc (DPZ.N). The Ann Arbor, Michigan-based parent is not a defendant.

Domino's shares closed Thursday up 1 cent at $11.31 on the New York Stock Exchange.

The Minnesota case is Luiken et al v. Domino's Pizza LLC, U.S. District Court, District of Minnesota, No. 09-00516. The New York case is Bodon et al v. Domino's Pizza LLC, U.S. District Court, Eastern District of New York, no. 09-02941. (Reporting by Jonathan Stempel, editing by Leslie Gevirtz)