Workers at Opel's Spanish plant have approved a deal reached Thursday with Magna International Inc. (MGA), press officials from Spain's two biggest unions said Monday.

Spanish unions last week had already reached a preliminary agreement, but workers' assemblies still had to approve the deal.

Spain's Industry Minister Miguel Sebastian Friday said his government would give financial aid to Opel, if workers approved the deal with Magna.

A deal involving General Motors Co. selling its majority stake in Opel to a consortium including Austrian-Canadian car parts maker Magna and Russia's OAO Sberbank (SBER.RS) was expected to be signed in early October, but suffered delays due to labor issues and concerns about state aid.

The board of General Motors Co. will meet Nov. 3 to discuss whether it wants to sell Opel to the Magna consortium.

Spanish workers had been concerned some of the production in Opel's factory near Zaragoza, Spain, may be diverted to Eisenach, Germany, and that too many Spanish jobs would be lost.

-By Bernd Radowitz, Dow Jones Newswires, +34 91 395 81 20, djmadrid@dowjones.com