Strike at the world's third-largest aircraft manufacturer. What about supplies?

The strike was announced on the night from Wednesday to Thursday.

The metalworkers' union in Sao Jose dos Campos, home to Embraer's headquarters and main production lines for passenger planes, said the strike began because of the company's "refusal to offer a real wage increase," Reuters reported.

There are conflicting reports regarding the protest's impact. The union stated that the strike led to a production halt. The company maintains that its operations were not disrupted.

The strike took place at a key moment for the company.

Embraer delivered 26 passenger planes by the end of June, but plans to deliver 77 to 85 throughout the year. And now, production is ramping up.

According to the Sindmetal Fiesp trade union – an entity representing the aviation and space sector – in the negotiations proposed a salary adjustment based solely on inflation.

The first proposal for a 5.05 percent pay increase was rejected last week. Unions are demanding an 11 percent increase.

In a statement, Embraer expressed surprise at the union's actions as negotiations are still ongoing.

The world's third-largest aircraft manufacturer, whose shares hit a record high earlier this year, is benefiting from strong demand for its jet planes.

"The factory is breaking records in profitability, revenue, and order backlog. Now it's time to share these results with the production line workers," said union director Herbert Claros.