This is not permissible as it is approving of their shirk and disbelief and collaborating with them! If the celebration was halal and doesn’t include any haram such as music, free mixing, alcohol etc, this is permissible as in Muslim weddings. Birthdays and the likes are prohibited.

There are some of us women who have started a business as an event planner, that will include planning different kinds of events like weddings, birthdays, seasonal parties etc. Do you think it is permissible or is there any harm doing it?

Jobs | May 9, 2017 5:44 pm
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Is it permissible for the owners of a restaurant to talk about the shortcomings and mistakes of their employees. For ex. If they talk about their employees not performing their job, or not using common sense, or not being trustworthy. Is this backbiting? And what are the limits when evaluating employees?