Do i need to belong to union and which one?

[sinikala]

I didn't need to go to Kela so I don't know why Hank recommend that you should.

It is smart to be registered at KELA even if you don't go to normal doctors, because without KELA you are not part of the social system. You don't get any money if you are out of work and have no money for food (hopefully not needed any way for OP!), but also if you have long periods of illness or if you or your spouse want to have maternity/paternity leave, you have to be registered with KELA. If you take medicines, you will most likely get them cheaper if you are "in the KELA computers". To get the EU health coverage (valid when in touristing in other countries), you have to be registered with KELA.

Getting the actual KELA card is much less important. The card just proves that you are in the KELA computers. It just saves them the work of looking you up in the computer to see if your name is there or not.

I don't dispute that, but as you cut out the important part relating to Kela, I'll paste it back.

you can download a form SV157s under the section "Lomakeet" - "Kela-kortti"

I did not need to physically go to Kela, I filled in a form from the internet, posted it and received my card. That Kela issued a card to me is a pretty good indication that my name is in their records.

What I don't know is who informed Kela about me in the first place, I guess that when they started getting their cut of my salary

http://www.tyoelake.fi/Page.aspx?Section=39159

they started a record for me.

[Hank W.]

Well, you can get most other things done on the phone actually. Like doing your change of address to the maistraatti and getting your tax card... that is, if you are in the system and can speak & read Finnish (or rather, "think" Finnish, just ask any Swede if the Finnish documents make any sense to them with the terminology). Now we're not counting in the luggage restrictions on ryanair so someone having a printer with them and then having a phone let alone internet connection might take a while, of course people should take care of the important things first, like get their SKY package and whatnot...Otherwise if you're just off ryanair, the universe hasn't turned i.e. databases updated and you don't understand that ticking boxes here and there and your military service or religion do in the appropriate documents, it might be helpful to sit down with someone who will help you fill out the forms and make sure you have all the papers, remember all the papers... Especially KELA is very efficient in forgetting the paperwork if theres something missing... naturally not telling the person anything. But yes, everything can be done in a snap. Isn't it wonderful.