I have a Work Permit and one year visa which requires the 90 day visits to the Immigration Office. Someone once told me that if you check-in your paperwork a week or two weeks before the deadline you don't have to go in person, someone could go on your behalf with the paperwork. The firm that manages my WP & Visa process says I must go in person.

Does anyone know the answer? And if you think I don't need to go where it's documented?

thanks,

If you are doing 90 day reports you are on extension of stay (not a visa). You can report in person or someone can report for you. Most immigration offices also accept reporting by post.

http://www.immigration.go.th/nov2004/en/base.php?page=90days

(postal reports now to local immigration office, not Soi Suan Phlu. Suan Phlu office has moved to Chaeng Wattana anyway)