Western Australia has joined the other states by introducing a law which will make protesting outside of abortion clinics illegal.

The law will allow for safe access zones for women accessing abortions and will prevent people from protesting within 150 metres of facilities that provide abortion services.

Family planning healthcare provider Marie Stopes says the new law will stop women facing harassment from protesters who spent almost 2,300 hours each year outside their clinic where even staff had also been targeted.