The former first lady is accused of allegedly attacking an employee at the family's home for "milking" her husband.
According to court papers filed in Zimbabwe's high court Grace allegedly beat up Shupikai Chiroodza, who was a government employee working at the Mugabes' private Blue Roof mansion in Harare in March 2017 because she had accepted a cash wedding gift from him, the papers say.
Chiroodza allege that Mrs Mugabe used her fists and then her shoe in a prolonged attack that left her face pouring blood.
“She started beating me with clenched fists shouting, 'Who do you think you are? You are milking my husband behind my back'," Chiroodza said in her court application.
"I was terrified. She removed her shoe and continued assaulting me with it and blood started gushing out of my forehead, mouth and nose. The assault continued for about 20 minutes."
Chiroodza says she received a dismissal letter two months later after the heavy beating.
In her court papers demanding her job back, Chiroodza said Grace Mugabe punched her and ordered her to return an unspecified amount of money.
"I represent Chiroodza, who was part of the domestic staff at Blue Roof in a case of unlawful dismissal," lawyer Douglas Coltart told AFP.
Coltart said the civil service commission had indicated it would not contest the case.
"We are hoping to get some form of settlement," he said.
Grace’s attack on Chiroodza occurred barely five months before the former first lady was involved in another violent alteration which a young woman in neighbouring South Africa.
In August 2017, Grace allegedly attacked Gabrielle Engels using an electrical extension cord at an upmarket hotel in Johannesburg where the Mugabes' two sons were staying.
Grace’s skin was only saved after South Africa granted her diplomatic immunity, allowing her to hurriedly leave the country, but a court later scrapped the ruling.
She earned the nickname "Gucci Grace" for her lavish lifestyle as Zimbabwe's economy collapsed under her husband's authoritarian rule.
