seasonal worker
as defined in Regulation (EEC) No 1408/71 of the Council of 14 June 1971 on the application…, Article 1, point (c)
any worker who goes to the territory of a Member State other than the one in which he is resident to do work there of a seasonal nature for an undertaking or an employer of that State for a period which may on no account exceed eight months, and who stays in the territory of the said State for the duration of his work; work of a seasonal nature shall be taken to mean work which, being dependent on the succession of the seasons, automatically recurs each year