Iberia has begun the process of making 3,807 redundancies following the announcement of strikes by unions representing its ground staff and cabin crew, who oppose the airline's restructuring.
The Oneworld carrier has entered a 30-day consultation period, after which it intends to make the redundancies. Iberia parent IAG had previously said up to 4,500 job cuts could occur.
On 11 February, pilots at the airline voted on whether to join colleagues in 15 days of industrial action scheduled for 18-22 February, 4-8 March and 18-22 March.
A decision is expected later this week on whether the pilots, represented by the union SEPLA, will take part in the strikes. SEPLA has been negotiating with IAG separately from other unions.
The large-scale restructuring plan devised by IAG aims to stem losses at the Spanish carrier by mid-2013. Other measures include the cessation of "non-profitable" third-party maintenance work, and the launch of low-cost subsidiary Iberia Express.