Openwork said it had already found a sucessor but was not prepared to make the announcement just yet.
Avery joined Openwork as a non-executive director in April 2009 before becoming the board’s chairwoman in July 2009.
She had previously worked at Barclays and later at Legal & General group, where she was executive director of the wealth management division.
Openwork chief executive Mary-Anne McIntyre said: “Kate became our chair at a pivotal time for Openwork and has been a vital contributor to our transition through the RDR and our move into profitability.
“Kate’s experience and wise counsel have been huge assets to us over many years and, on behalf of Openwork and her many friends in the business, I would like to thank her for her efforts and wish her every success in the future.”
