A union of Cathay Pacific crew is considering a judicial review after the Privacy Commissioner decided not to appeal against a court ruling over the airline collecting medical data from cabin staff. About 30 members of the Cathay Pacific Airways Flight Attendants Union protested at the Office of the Privacy Commissioner for Personal Data in Wan Chai yesterday to voice their discontent. The flight attendants submitted a letter to a representative of the commission. 'We are shocked to learn of the Privacy Commissioner's decision. It clearly shows that they are not doing their job,' said Becky Kwan Siu-wah, chairwoman of the union. 'Medical records are private data and yet the Privacy Commissioner has decided not to defend our privacy. We are considering seeking a judicial review on the ruling.' In August, Cathay Pacific won a legal battle that enabled it to ask flight attendants who often called in sick for their medical records. The High Court overturned the ruling of Privacy Commissioner Roderick Woo Bun, who found the practice unfair because Cathay threatened to sack cabin crew who refused to supply medical data, and ordered the regulator to take a fresh look at the case. Mr Woo decided last Friday not to file an appeal against the ruling. Ms Kwan said: 'We already have to submit sick leave certificates, which contain all medical information. What else does Cathay Pacific need to know? Cathay Pacific has no trust in doctors' professional judgment at all.' Cabin crew were worried the airline might use medical records as an excuse to sack staff, she said. The privacy regulator said the commissioner would study the letter and the union's comment, and would make a prompt reply. 'The judgment was decided on the particular circumstances of the case and nothing in it suggests that the court has deviated from the relevant data protection principles contained in the Personal Data (Privacy) Ordinance,' its statement said. 'In particular, the means of collection must be both lawful and fair.' The Hong Kong Flight Attendants Alliance voiced support for the union and urged the government to look into the issue from a broader angle. 'This matter does not affect only Cathay Pacific cabin crew,' alliance spokeswoman Winnie Poon said. 'Other airlines or companies might follow the practice, and this will affect other cabin crew and employees in other trades too.' Cathay Pacific said the court ruling confirmed there was a need for it to seek medical information under the airline's attendance monitoring programme.