A flight attendants labor union is battling a policy by Asiana Airlines that says female workers are not allowed to wear pants on the job.

Asiana has a 10 -page rule book for female flight attendants about how they should look while working, Kweon Soo-joung, head of Asiana's labor union, told The Associated Press. Male flight attendants have two pages of rules regarding their appearance.

The skirt-only policy was implemented to emphasize the company's brand of "high-class Korean beauty," the airline said.

Asiana is the only airline in South Korea with a no-pants rule in place for flight attendants. The airline, according to The National Human Rights Commission of Korea, also has specific rules regarding hairstyles and makeup of its employees - Soo-joung said the airline has a ban on eye glasses, a requirement to cover up facial blemishes, and certain requirements for the length of earrings flight attendants wear.

The airline flight attendants' labor union has been working with Asiana Airline officials to end the no-pants policy and they already have the support of South Korea's human rights commission.

As of January, Asiana said it eased certain appearance rules including allowing glasses. The carrier said it would review the no-pants rule in future uniform design meetings.