"There's about eight people that will potentially not have roles from this.
"I can't give you an exact figure on who or how many people may end up being redundant," he said.
He said that the ability to find roles for people within the organisation was reasonably good.
"We could end up with nobody that has ended up losing a role from this."
Staff have been involved in the process from the beginning and nearly 750 staff from the two DHBs gave feedback on the new management structure.
"People have known this is coming, so there's been no surprises with the announcements that have been made."
Mr Dyer said the structure would be more cost effective. "By putting the two organisations, together it's going to cost less to run".
The integration process began nearly three years ago when senior clinicians from three lower North Island DHBs began looking at vulnerable services, and those which would most benefit from a joint approach.
In October 2012, the DHBs released a partnership programme to address sustainability, access and quality issues.