SBS has closed its Melbourne office, radio and production studios in Federation Square after an employee tested positive for COVID-19.
SBS News reports an employee returned a positive coronavirus test on Sunday, with close contacts identified and told to self-isolate.
The worker had last attended the workplace on Thursday 25 June.
The site closed on Sunday afternoon for additional cleaning but re-opened on Monday.
On Tuesday evening, Victorian Health authorities contacted the public broadcaster to say it had revised its health guidelines for the workplace. SBS management chose to close the Melbourne workspace from 1 July to allow for further contact tracing.
Employees have been told to work from home if able to do so.
The SBS Sydney newsroom closed in March when it was linked to another positive case.