Crews at the mine were informed as they started work at 6am on September 2.
New Hope is yet to receive any indication from the state government regarding the future of the mine and its application for Stage 3 Mining Leases; an associated Water Licence; and approval to continue using the Jondaryan Rail Facility.
"New Hope advised the government in June that these approvals were needed by September 1 in order to provide continuity of operations from Stage 2 to Stage 3 and prevent job losses," the company said in a statement.
"The government's silence on these approvals gives us no choice but to initiate the redundancy process."
New Hope said it was committed to securing approval for Stage 3 and in doing so being able to provide ongoing employment at the New Acland coal mine.
"The sooner the approvals for Acland Stage 3 are given the sooner new jobs can be created and fewer jobs lost through the transition from Stage 2 to Stage 3," it said.
New Acland Coal general manager Dave O'Dwyer said Queensland premier Annastacia Palaszczuk stood up and stated to the party faithful last weekend of the importance of regional jobs and the coal sector.
"The Palaszczuk government is responsible for 150 workers and their families losing their livelihoods leading into Christmas," he said.
"New Hope remains open to working with the Queensland government to save jobs and secure the future prosperity of Oakey and the surrounding region."
"Twelve years to wait for approvals is long enough."