Pineapple Lumps live on until 9.30pm tonight! Dunedin's Cadbury factory extends chocolate making hours on last production day

The chocolate assembly line at the Dunedin's 150-year-old Cadbury Factory is set to remain producing Pineapple Lumps open until 9pm tonight after production hours  were extended on the factory's last day of operation.

The factory set to close for good next Thursday.

Factory owner Mondelez International announced the closure in February last year, and 350 workers are losing their jobs.

E tu food industry coordinator Phil Knight visited the Dunedin factory on Wednesday saying that the feeling among workers was positive.

"It's been tough on people coming to work and their workmates of many years aren't there. The oldest serving member has been there for 38 years."

"[But] people are looking forward to the next phase in their lives, albeit with some anxiety and sadness."

Mr Knight said the usual hustle and bustle of the factory floor has been replaced by a disquieting silence.

"When you stand at one end of the factory floor and you look to the far end where it's all been cleared out, it's clean as a whistle but also a bit spooky too."

"Because you know that up until a few months ago, it would have been 30 or 40 people working there, it was a hive of activity. So, to see it so quiet - it's ghostly, eerie."

Mr Knight said most union workers had either found future employment or had plans in place, with some retiring and others taking time to evaluate their next career move.