If you have suffered physical or mental injuries then you can make a worker's compensation claim through WorkCover:
You can also report the matter to the police who should pursue the matter as an assault, and if the person can be identified, you could sue them for compensation.
Your entitlement to compensation will largely depend on how significant your injuries where, but you may be entitled to a modest amount of compensation even if you were not injured, though only if you sue the person directly.
You can pursue a worker's compensation claim directly through workcover, but to pursue a claim against him individually, you would realistically need to engage a lawyer to press your claim.
If you need help locating a suitable lawyer contact the WA Law Society as they can refer you to a suitable lawyer in your area.
I trust the above assists.
Good luck and PLEASE RATE MY ANSWER.