Is it permissible for a colleague at work to receive additional pay in my name for work he did alone, due to a difference in rank?

The matter mentioned contains two prohibited acts: intentional lying, which leads to immorality and Hellfire, and taking money unlawfully. Your agreement to this matter is impermissible. You must frequently seek forgiveness and not return to such an act. The person mentioned must offer sincere repentance and frequently seek forgiveness. As for the money, if he performed work that merits payment, then it is his; otherwise, he must return any excess. The questioner must be cautious of intermingling with foreign men, limiting meetings and speech to what is necessary, and wearing the hijab. If there is an urgent need for mixed-gender work, then otherwise, it is obligatory to restrict oneself to work free from intermingling.