A plumber has fallen into a hole at a worksite south of Perth.

On Monday afternoon, a man fell from a ladder in Pinjarra and wasn’t able to get out.

A Worksafe spokeswoman said a plumber was conducting civil works in a trench in the Pinjarra Industrial Estate when he fell, The West reports.

Emergency services were alerted to the site on Munday Avenue about 1.30pm.

 She said the man had been stabilised and was airlifted to hospital.

His injuries aren’t yet known.