What is the ruling on taking the price difference between the cost of the health insurance card and its selling price without the workers' knowledge, and must this difference be returned to them? What about issuing invalid insurance cards to non-Muslim workers and handing them over despite my knowledge of their invalidity; am I obliged to offer expiation for this, and how is it done? And what is the interpretation of a dream about drinking alcohol after the Fajr prayer has passed?

If obtaining the health insurance card is not part of your job, then it is permissible to take a fee for obtaining it on behalf of the workers. However, taking something without their knowledge is not permissible, because you are their agent, and you are obliged to act in their best interest. The expiation for this is seeking forgiveness and repentance, along with returning the excess amounts to their owners or seeking their forgiveness. As for the issue of invalid cards, you must repent and compensate the workers with valid cards. If one of them cannot be reached, their right should be spent on the welfare of Muslims. As for the question about interpreting dreams, this is not its place, and a Muslim must answer the call to prayer, especially for Fajr.