Nearly two months after an employee died at its Rosebank headquarters, Cartrack says its internal investigation is almost complete.

Vehicle tracking company Cartrack says it is awaiting a handful of external reports before finalising its internal investigation into the death of an employee at its Rosebank headquarters.

The company's investigation is at an advanced stage, nearly two months after 29-year-old Gcina Dhladhla died inside a toilet cubicle at the company's Rosebank offices on June 6.

It has been alleged that Dhladhla told a supervisor she was unwell but was instructed to continue working. Cartrack has strongly denied the allegation.

Employment and Labour Minister Nomakhosazana Meth visited the offices on Wednesday as part of the department's investigation into Dhladhla's death.