What is the purpose of this card ?
(a) Easier for the Embassy of Indonesia to contact and to provide assistance to the workers in the event of troubles or accidents. Information can reach the relevant authorities and families in Indonesia fast.
(b) To prevent workers working illegally and human traficking
(c) To prevent falsification of the workers' identity.
For workers already working overseas, they only need to apply for the card when they return to Indonesia for vacation. Failure in doing so may result in the worker being denied leaving the country for work again.
There have been many cases where workers who were unaware of this requirement, were stopped at the airport and denied flying.
Prior to this the implementation of this requirement was not strict and not consistent from airport to airport. Some workers were allowed to fly even without this card whereas some were denied leaving the country until they had obtained the card. However lately this has been strictly enforced in all airports.
Workers ( including maids ) will not be allowed to leave Indonesia without first applying for this card. According to the law of the country, those caught without this card may be fined up to Rp 1.5 million or imprisonment of 1-5 years. However this is just the laws, in reality workers are only stopped from flying if they don't possess this card.