Employment in Dundee changed dramatically during the 1980s with the loss of nearly 10,000 manufacturing jobs due to closure of the shipyards, cessation of carpet manufacturing and the disappearance of the jute trade. To combat growing unemployment and declining economic conditions, Dundee was declared an Enterprise Zone in January 1984. In 1983, the first Sinclair ZX Spectrum home computers were produced in Dundee by Timex. In the same year the company broke production records, despite a sit-in by workers protesting against job cuts and plans to demolish one of the factory buildings to make way for a supermarket. Timex closed its Dundee plant in 1993 following an acrimonious six-month industrial dispute. The Michelin Tyre factory closed in June 2020, with the loss of 850 jobs.