Barnett said he could not comment further, except to say that Collins had been a valued member of staff. It is not known what was said or done to Collins to prompt the complaint. The settlement appears to be bound by a confidentiality agreement.
Collins, who is the wife of Auckland Councillor Efeso Collins, said she could not comment. She joined Diversity Works in 2017 and was a diversity and inclusion manager, which involved running workshops for businesses. She has now set up her own consultancy.
It is understood that her payout was around $100,000 - nearly a tenth of the organisation's annual budget.
It was signed off by Diversity Works' board, which is made up of private and public sector leaders - including the chief executives of the Ministry for Social Development and the Ministry of Defence and the managing director of Coca Cola Amatil.
While Diversity Works gets some Government funding, it is not part of the state sector and is therefore not subject to strict guidelines on payouts.
Previously known as the Equal Employment Opportunities Trust, it is a national body which advises businesses on diversity and inclusion - including how to prevent bullying and discrimination.
"In a safe organisation, every employee is aware that bullying and discrimination will not be tolerated," its website says.
It received around $400,000 in public funding last year, which matches the amount it fundraised through donations.
Diversity Works mentioned Collins departure on its website in December but did not state her reasons for leaving. It said the team was "sad to farewell" her.
Hopkins is an experienced lawyer and has held senior leadership roles at private, public and charitable organisations.