Chief Executive John Hutson said no firm decisions had yet been made and he would listen to staff to avoid mandatory layoffs.
The decision will not affect staff in Northern Ireland and the Republic of Ireland, he said.
Advertising staff will also not be affected.
It comes just three days after the chain introduced a new Eat Out to Help Out discount at outlets across the country – giving customers £ 10 off their meals, in line with Chancellor Rishi Sunak’s subsidized pledge.
As part of the program, guests will receive half-price meals Monday through Wednesday throughout August, with the Treasury reimbursing the hospitality industry for the reduction.
JD Wetherspoon has said he will offer the reduction in addition to the six-month VAT reduction, with the reduction being extended to alcohol in a bid to win back customers after the four-month lockdown.
Wetherspoons announced that as part of this scheme breakfasts in its pubs would cost £ 2.24, a pizza £ 2.75, other meals £ 2.37 and a children’s meal at 2.08 £.
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Company chairman Tim Martin said: “Thanks to the government program, an individual is £ 2.93 better to eat and drink from Wetherspoons than buying a similar line of products from Tesco.
“Over a 13-day period, customers would save £ 38.09. The vast majority of our pubs will offer a range of meals, including a drink, at great prices. “