"Still the owner of all ten fingers, he will be OK," a Facebook post said with a smiley face emoji.

"Our young fella, Jack, was involved in an accident that resulted in a medium risk workplace injury."

The post said the store would be trading as usual on Friday and thanked emergency services for the prompt response and thorough care.

WorkSafe ACT is investigating the incident and had previously been seeking to speak to a member of the public who may have witnessed the incident. The witness has since come forward.

Firefighters had to manually disassemble the meat mincer at M and K Meats at the Lanyon Market Place after the young worker's hand became trapped in the meat grinder.

The incident happened around 1.15pm on Thursday and a prohibition notice has been placed on the grinder while the investigation is underway.

The man was transferred to hospital in a stable condition.

"Paramedics and firefighters worked together to extricate a young male whose fingers became trapped in a meat mincer," the Emergency Services Agency said.

"Paramedics treated the patient on scene before transferring him to the Canberra Hospital in a stable condition."

The incident was one of two workplace accidents in the ACT on Thursday, with a 19-year-old man knocked unconscious in Fyshwick when a tyre that was being inflated exploded at a tyre shop.