"The victim is being cross-examined by the defence team. It is likely to continue on Tuesday," sources said.
The victim has flown to India from the UK, where she is currently residing, to appear for the cross-examination.
Tejpal is charged with several sections of the IPC for sexually assaulting the junior colleague inside a lift of a resort hotel in Goa during the magazine's event in November 2013.
Tejpal has been booked under Sections 376 (rape), 341 (wrongful restraint), 342 (wrongful confinement) 354A (sexual harassment) and 354B (criminal assault), of the Indian Penal Code.
The trial, which began in September 2017, was delayed after Tejpal moved the Supreme Court pleading quashing of the charges framed against him by the lower court.
Disposing his plea in August this year, the apex court directed the lower court to complete the trial within six months.