North London coroner Andrew Walker has decided there needs to be an inquest into the 47-year-old’s death a year ago.
Police investigated her death but concluded there was not enough evidence to charge anyone.
The incident happened on the concourse of London’s Victoria station.
Manuel Cortes, general secretary of the Transport Salaried Staffs Association (TSSA), said: “Our entire union will welcome the decision to hold an inquest into Belly’s tragic death.
“As far as we are concerned there have always been a number of outstanding questions about what happened to Belly and an inquest will be a step forward in the fight for justice.
“Belly’s death touched the nation and was keenly felt by so many transport workers who have bravely been on the front line throughout this terrible pandemic. We simply must know what happened and the lessons which can be learned.
“For all these reasons, and to bring peace to Belly’s family, without doubt it’s in the public interest to have an inquest.”
Lawrence Davies, Equal Justice solicitors, solicitor of the Mujinga family said: “The family welcome the Coroner’s decision today to hold an Inquest into the death of Belly Mujinga.”
“It will address the health and safety problems (lack of PPE) faced by frontline workers during the covid pandemic, and particularly those with underlying health issues, as well as the racism and harassment that BAME frontline workers face at work, and it will finally allow us to call to account the intemperate white male who the family allege assaulted Belly and her colleague, Motolani, twice on the concourse of Victoria Station on 21 March 2020.”