I work for the Aramco company, which has an early retirement program for those who reached the age of fifty, and they get free medical treatment for life. Is it permissible to change my age by applying to the civil records department, without paying any money or giving a specific age, but with the aim of getting free medical treatment, because if I retire before fifty, there is no medical treatment?

Praise
be to Allah.

It is not
permissible to lie about one’s age in order to get the free medical
treatment offered by the company. This comes under the heading of lying and
deceit, and the Prophet (blessings and peace of Allah be upon him) said:
“Whoever deceives us is not one of us.” Narrated by Muslim, 101. 

And he
(blessings and peace of Allah be upon him) said: “Beware
of lying, for lying leads to wickedness and wickedness leads to Hell. A man
may continue to tell lies and endeavour to tell lies, until he is recorded
with Allaah as a liar.” Narrated by
al-Bukhaari, 6094; Muslim, 2607. 

What the
believer must do is be sincere in word and deed. Allah, may He be exalted,
says (interpretation of the meaning): “O
you who believe! Fear Allah, and be with those who are true (in words and
deeds)” [at-Tawbah 9:119]

And Allah
knows best.