`You would attend the visitation. However, this depends on how close your relationship is with your work friend – typically, you would pay your respects and acknowledge your coworker’s loss at the visitation or viewing. You can certainly attend the funeral as well, yet this is generally not expected of coworkers unless you are close to the coworker.
If you need any other information about attending services, you can also check https://www.funeralwise.com/funeral-etiquette/attending-services/. Should you have other questions that are not covered in that section, feel free to let us know and we’ll provide further assistance.