A worker was bashed on the head with a metal pole during an armed robbery at Laverton North McDonald’s on Tuesday.

Police say four masked offenders forced their way into the Fitzgerald Road fast food outlet about 3.20am.

They threatened staff and demanded cash.

Police say a staff member, a 19-year-old man, was hit over the head with a metal pole.

He suffered a cut to the head and was taken to Footscray Hospital in a stable condition.

Investigators say the four offenders were perceived to be of African appearance.

Anyone with information should call Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au