At NZIER we will miss Shamubeel. He has been an excellent colleague, an incisive and insightful thinker, and a trenchant and vivid writer. Shamubeel leaves us with our best wishes for his future," the statement said.
Eaqub opened the NZIER Auckland office on Shortland St a few months ago and recruited a number of staff.
He not only fronted the series of quarterly economic briefings for clients and the media but is also an outspoken opponent of buying houses and a strong advocate for renting.
He has written a series of books.
These include the latest, Generation Rent, co-authored with wife Selena, calling for new attitudes to tenants, as well as Growing Apart, Regional Prosperity in New Zealand.
Both were published by BWB Texts.
He and Selena are now parents to their new son, Haydn, who is seven weeks old.
Eaqub has been on paternity leave from NZIER for some weeks.