What documents are required for a non-dependent visa in Thailand after bringing my wife on a tourist visa?

To apply for a Non-Dependent Visa for your wife while holding a work permit visa in Thailand, you will require several important documents. Firstly, obtain permission from your employer. You will also need a marriage certificate, which may need to be translated and notarised. Additionally, consult the TM86 application form and check the local immigration office for specific requirements.