British Airways (BA) has sacked one of the three workers disciplined for organising wildcat strikes at Heathrow Airport last summer.
The employee was found guilty of “gross misconduct for playing a leading role in the walkout”, the airline said.
A second employee was found guilty of gross misconduct and suspended without pay for one month, and disciplinary procedures continue for a third person.
BA flights were badly affected when ground staff walked out in support of sacked workers at the airline’s caterers.
BA launched an investigation into the unlawful industrial action in August by 1,000 of the airline’s ground support staff at Heathrow.
The secondary action was in sympathy for a dispute between the Transport and General Workers’ union and in-flight catering supplier, Gate Gourmet.