Holden workers have accepted a three-year wage freeze in order to prevent the company closing its production line in Adelaide's northern suburbs in 2016.

In a series of ballots today, 1700 employees at the Elizabeth plant were effectively voting to keep themselves in work.

A planned 3 per cent wage increase from November will now be deferred as the carmaker looks to save $15 million in labour costs in order to remain viable and keep building cars in Australia.

Holden workers were also asked to approve changes to sick leave, overtime and shift breaks.

John Camillo from the Australian Manufacturing Workers Union says a very clear majority voted in favour of the proposals.

The outcome of the vote does not guarantee the plant's future, with Holden's survival now resting on a new government deal to be negotiated after the Federal election to secure funding for the period from 2016 to 2022.

The plant's work force was cut by 400 in July after workers accepted redundancy packages.

More to follow.