The shutdown of Holden's car assembly plant in Adelaide will be another "massive" shock to the South Australian economy, Premier Jay Weatherill says.
The plant has produced its last car and will close on Friday, with the final 955 workers leaving for the final time.
Mr Weatherill says the job losses will be a major challenge, but believes the impact will not be as severe as what was once feared, when the closure of the company's manufacturing operations was first announced in 2013.
He says that is largely thanks to measures put in place by the government to grow jobs across the economy, especially in new and emerging industries.
"Having said that, though, there will be some workers, when they walk out of the gate today, they won't have a job to go to and some of them won't even have thought about that yet," the premier told reporters on Friday.
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"Some of them will be scared about the future."
Mr Weatherill says the state government will continue to support Holden workers and others involved in the automotive supply chain to find new jobs.
Unions believe about 2500 jobs will be lost with the closure of Holden, including those in the company and within the wider auto component sector.
