Labor Minister Fatima Bañez speaks in Congress. Jaime Villanueva

The bill was introduced on Tuesday and will now go to committee, undergo amendments, return to the lower house and be referred to the Senate.

If the text passes in both houses, the government will have no choice but to enact it into law, admitted sources at La Moncloa, the seat of government.

The bill still needs to overcome a series of hurdles

If so, it will be the first opposition-sponsored initiative to be approved against the PP’s wishes and affecting economic policy.

Although the Constitution allows the executive to veto bills that could throw the budget off balance, Rajoy cannot fall back on this option because the wage hike would go into effect in 2018, and therefore does not affect the current public accounts.

Once the law is published in the Official State Gazette (BOE), the PP could lodge an appeal with the Constitutional Court, but this would not stop its going into effect.

Partial amendments

The bill still needs to overcome a series of hurdles, including differing viewpoints by the various opposition parties. At the amendment stage, the Socialist Party (PSOE) will ask for the wage raise to be more gradual, while regional pro-independence parties will request leeway to apply a different index depending on the region.

Rajoy and Labor Minister Fátima Báñez are scheduled to meet with union and employer representatives on Thursday to discuss the matter of minimum wages. Spain’s two major labor unions, CC OO and UGT, have been repeatedly demanding a quick hike to €800, followed by a more gradual raise to €1,000 (spread out over 14 monthly payments).