Specsavers has announced a plan to cut 450 jobs amid a “dramatic downturn” caused by the coronavirus lockdown.
The opticians firm said support office workers, mainly based at administrative centres in Guernsey, Nottingham and Whiteley, Hampshire, were at risk.
The three offices will remain open, it said.
It said it had previously tried to avoid redundancies by implementing pay cuts and reducing some workers’ hours.
The company said those “at risk of redundancy” represented nearly a quarter of its 2,000-strong support team, and store staff were not affected.
Co-founder and chief executive John Perkins said the business downturn was coupled with a “challenging outlook for the economy”.
He added: “We sadly have had no option but to stop many of our major programmes, halt significant capital investment initiatives and carry out