The GRTU national council had endorsed the candidacy of Vince Farrugia for the European Parliament elections.
Mr Farrugia, who is director-general of the GRTU, is a PN candidate. Earlier this week the GRTU said Mr Farrugia would stay on as director-general but would not speak on its behalf until the elections were held on June 6.
The council said it was backing Mr Farrugia in recognition of his hard work for small and medium sized enterprises both in Malta and at an EU level.
Mr Farrugia would be a worthy, determined and experienced representative of the Maltese people in the EP.
The council said it would also be an honour for the GRTU if a person so closely associated with it was to serve in the European Parliament.
The GRTU said it was therefore urging its members and the owners of small businesses to give their voting preference to Mr Farrugia.