The agreement formally recognises Gamesa's commitment to its social, labour and environmental commitments made as part of its CSR strategy.
This new deal with Industriall extends to all of Gamesa's employees in all countries it is present in. Gamesa said it is the first agreement of this type. It will run for four years initially, with the option to extend the deal every two years.
Gamesa will oversee the agreement along with other union representatives in a new "coordination and oversight" body. It will report every two years on how the agreement is being met.
Gamesa chief corporate officer Jose Antonio Cortajarena said, "This agreement evidences the continual and two-way dialogue that exists between Gamesa and its unions."
This deal contrasts with rival manufacturer Enercon's disputes with trade unions in Germany.