A Wellington meatworks is defending a charge relating to an arm injury suffered by a cleaner.
Taylor Preston is facing one charge of failing to prevent injury to an employee laid by Worksafe New Zealand.
The charge relates to an injury sustained by Matalena Tuiluaai, while she was working at the company as a cleaner in August 2013.
Ms Tuiluaai told the court she was nearly finished work about 4am when a colleague pointed to a piece of meat stuck in a conveyor belt.
She said as she put her right hand into the machine to remove the meat, a colleague told her not to do so, but it was too late and her hand had already become stuck.
The witness said the accident caused arteries to burst in her arm and she also needed surgery to straighten out a bone.
The case is expected to run for several days.