Called a "national day of action" by the No Cuts to ACC Sexual Abuse Counselling group, protesters picketed in Auckland, Wellington, Christchurch and Dunedin.
In Wellington, protesters met at the Cenotaph before marching past Parliament and ACC's head office.
Almost 200 people held signs, chanted and left a rainbow of messages in coloured chalk on the pavement demanding "No cuts", "Support survivors" and "I'm not crazy".
A group of about 70 people met outside the Dunedin ACC offices in the afternoon and gave a letter to staff outlining their objections to the proposed changes.
One point they made was their concern about victims being re-traumatised if they had to be diagnosed with a mental illness in order to receive support.
Chanting "They say cut back, we say fight back", the group made its way to Dunedin National Party list MP Michael Woodhouse's office where a heated encounter occurred between him and some protesters.
The protest ended with a rally in the Octagon at which Acclaim Otago vice-president Bruce Van Essen, Acclaim Southland president Linda Green, Labour ACC spokesman David Parker, and representatives from other organisations and members of the public spoke about their experiences with ACC and the issues at hand.
Mr Van Essen said victims of sexual abuse, or any other injured person, were vulnerable and did not ask for the abuse or injury.
"These people should not be subject to losing cover and entitlements, because ACC themselves are causing the scheme to blow its budgets."
