Working for a salary and not for the Hereafter – is this blameworthy?

There is an employee who has been working for the state for more than twenty years. He is an honest worker with a good attitude who tries to please his superiors and boss, and works hard so that he will receive his salary in full with nothing docked from his pay, and so that he will earn promotion. All of these efforts are only for the sake of his work, not for the sake of Allaah. But this employee worships Allaah and does good deeds sincerely for the sake of Allaah, outside of his work. He prays, fasts, gives charity, pays zakaah, goes for Hajj, reads Qur’aan, reads Tafseer and does all kinds of good things sincerely for the sake of Allaah and in accordance with His sharee’ah. So what is your opinion – may Allaah reward you with good – about this man’s attitude when he is at work? Is it permissible, or is it shirk , or what? Please advise us and tell us what he should do. Is there any sin on him for what he has done in the past in his work? May Allaah take care of you.