Confirmed it is needed, as a person who buys and sells chars. When I have one I want to play, like this one. I get turned down do to history only.

I remember a time where corps would decline you simply for having been in too many corporations. Period.

The main thing that makes it so long is the NPC corps, remove them and the list is suddenly not that long.

Getting into some corps will be hard with a long employment history yes, but not impossible.
Removing the employment history can cause so many issues that i dont even know were to begin!

You mention one your self, spies. If you can remove your employment history it would be a lot easier for spies to get into whatever alliance/corp they wanted, but this would also remove a lot of the challenges a spy has to overcome, and i would think those challenges is part of the fun.

Consequences for joining a corp without proper research or knowledge. EVE is so strict on the fact that everything has consequences and that you have to take your time with everything. Joining a corp should be no different. If you decide to join a corp just because they were willing to accept you, its your own fault that extra name got added to the list, not the recruiters.

As a recruiter i will often look over what corps someone has been a member of in the past to see if they would have any interest in what we could offer them. If i see nothing but high sec mining corps i know there is a high chance they would not be happy with us, thus its worth having a talk with them. Removing the employment history would make it easier for someone to just lie and say "yea we have experience with (whatever!) while they have never even set a foot outside of high sec.

History. When i see someone who was a member off.. some corp i knew, or some corp that used to be known by "everyone" it can both lead to nice conversations about "ohh do you remember this person" or just make the person feel a sense of pride that his/her corp name gets attention and in some cases it says something about the player. If they managed to get into that corp/alliance it means they had something special to offer, and they gained knowledge from people who most could respect (or hate depending on how you look at it).

My employment history is pretty short, but i can tell you that even if i had a long list i would want to maintain it purely for its history and to show people what i did, look over the names and remember what i did and who i flew with and what we accomplished. And sure you know these things, but sometimes you want others to know that you were a part of something bigger. And without an employment history..well.. I could just lie and say i was a part of (whatever corp/alliance you respect) and no one could question it.

The main thing that makes it so long is the NPC corps, remove them and the list is suddenly not that long.

The idea with a notation when a character is sold: Spies will only transfer the character to another account.

Getting into some corps will be hard with a long employment history yes, but not impossible.
Removing the employment history can cause so many issues that i dont even know were to begin!

You mention one your self, spies. If you can remove your employment history it would be a lot easier for spies to get into whatever alliance/corp they wanted, but this would also remove a lot of the challenges a spy has to overcome, and i would think those challenges is part of the fun.

Consequences for joining a corp without proper research or knowledge. EVE is so strict on the fact that everything has consequences and that you have to take your time with everything. Joining a corp should be no different. If you decide to join a corp just because they were willing to accept you, its your own fault that extra name got added to the list, not the recruiters.

As a recruiter i will often look over what corps someone has been a member of in the past to see if they would have any interest in what we could offer them. If i see nothing but high sec mining corps i know there is a high chance they would not be happy with us, thus its worth having a talk with them. Removing the employment history would make it easier for someone to just lie and say "yea we have experience with (whatever!) while they have never even set a foot outside of high sec.

History. When i see someone who was a member off.. some corp i knew, or some corp that used to be known by "everyone" it can both lead to nice conversations about "ohh do you remember this person" or just make the person feel a sense of pride that his/her corp name gets attention and in some cases it says something about the player. If they managed to get into that corp/alliance it means they had something special to offer, and they gained knowledge from people who most could respect (or hate depending on how you look at it).

My employment history is pretty short, but i can tell you that even if i had a long list i would want to maintain it purely for its history and to show people what i did, look over the names and remember what i did and who i flew with and what we accomplished. And sure you know these things, but sometimes you want others to know that you were a part of something bigger. And without an employment history..well.. I could just lie and say i was a part of (whatever corp/alliance you respect) and no one could question it.

The main thing that makes it so long is the NPC corps, remove them and the list is suddenly not that long.

The idea with a notation when a character is sold: Spies will only transfer the character to another account.

No.
If you don't want a corp on your history, don't join it.

Someone will just store your employment history on a 3rd party site for corps to reference. I think these already exist actually, I don't think changing them in-game would help.

like pay some isk to some specific NPC and you can change your employment history to their corporation.cause a lot null sec
alliance will decline your application just because your history. and if you can change your history EVE will be more real cause if is in the real life you cant always just get those information so easily.and it will also creat a lot jobsfor spies.
and of course it shall cost a lot and maybe charge according to your SP~

like pay some isk to some specific NPC and you can change your employment history to their corporation.cause a lot null sec
alliance will decline your application just because your history. and if you can change your history EVE will be more real cause if is in the real life you cant always just get those information so easily.and it will also creat a lot jobsfor spies.
and of course it shall cost a lot and maybe charge according to your SP~

well it will help for guys just want it to be short

On a serious note, I wouldn't necessarily say that the corporation history should be cleaned so much as a notation made in the corp history when purchased by a new owner. That way the character's history is maintained, but it can still be made clear how much of that history belongs to the new owner.