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BMA said the worker had been retested during the week and the original positive result had been attributed to a laboratory error.
"Most importantly, our colleague is very grateful to be cleared of COVID-19, and is happily spending time with his family at home in the Rockhampton region," the company said.
"His colleagues who he had interactions with outside of work, and had also been in isolation as a precaution, have also been notified.
"We acknowledge the impact this situation has had on the individuals involved, as well as our colleagues at Blackwater."
As advised by CQ Health, BMA said this meant there had been no community transmission in Central Queensland.
"In line with our commitment to health and safety as our first priority, we will continue to work with local public health authorities and to reinforce strict social distancing, hygiene and cleaning practices across all of our operations," it said.
