[ghillbert]

Be very careful - if you entered on a tourist visa, you may not be permitted to work as a hospital volunteer. Even if you're not getting paid, you may not work in a role where anyone gets paid for that job usually.

Entering on a tourist visa and then adjusting to another status sends up red flags with immigration - so think very carefully before overstaying your tourist visa.

[suzanne4]

If at the hospital for more than a few weeks, they need to actually get a visa for you, you cannot use the tourist visa for that.