British Airways, which reported a record annual loss last month, said on Tuesday it had asked its staff to work for nothing as part of the company's battle for "survival" in tough market conditions.
The appeal to its British-based employees, which featured in the company's staff magazine, asks workers to volunteer for between a week and a month in unpaid leave or in unpaid work.
Chief executive Willie Walsh, who along with the chief financial officer Keith Williams has promised to work for nothing in July, said the idea was part of BA's across the board cost-cutting measures.
"Many of you from across the airline are stepping up to help the company," Walsh said.
"I am looking for every single part of the company to take part in some way in this cash-effective way of helping the company's survival plan. It really counts."