Carlee Chirichiello appeared in the Launceston Magistrates Court on Tuesday charged with failure to comply with health and safety duty - category 3, after an employee of her Scottsdale pizzeria got his hand caught in a dough mixer in April 2017.

The court heard Chirichiello purchased the dough mixer from a friend about two years before opening Nan's Pizzeria in June 2016.

The dough mixer didn't come with maintenance records and the emergency stop button didn't work, but what Chirichiello didn't know was a number of other switches also didn't work.

An experienced pizza maker, Chirichiello personally provided training on how to use the dough mixer to all her staff.

On April 22, 2017, an employee had extracted as much of the dough as possible, but there was a small bit still in the machine.

The court heard he turned the machine back on to flick the last bit of dough to a position where he could get it out.

The employee told police he knew he needed to turn the machine off before extracting the dough, but he couldn't remember what happened in the moments leading up to his injury.

The employee's hand was caught in the machine, causing damage to his thumb muscle, the heel of his hand and injuring tendons.

A victim impact statement was not supplied to the court.

Chirichiello, 56, told the court health and safety was always at the forefront of everything she did at the pizzeria.

The business closed in June 2017 because Chirichiello was struggling to juggle the full-time care of her two grandchildren and the pizzeria, the court heard.

Magistrate Simon Brown said failing to have a dough mixer in working order was a serious breach. Chirichiello was convicted, fined and ordered to pay court cost.