Tayfun Torunoglu wrote:
A worker has a right to show his/her previous employers in his/her CV. A translator has also such a right.
Could you show me the Law prohibiting this?
Unless there is an agreement prohibiting disclosure everyone is free to show his/her previous employers and works in CV.
It's one thing to reveal the names of your clients, and quite a different thing to reveal what projects you did for them or what they entailed.
If the project in question is something that is for public consumption and it has already been published (e.g., book, catalog, consumer brochure, web site, etc.), then it's OK to name and/or describe it, although personally I would ask for the client's permission before doing so.
In this case, I don't think individual-project permission is necessary —a blanket permission to name and describe projects on your CV or web site once the projects are published and distributed should be sufficient.
However, keep in mind that until such projects are published and distributed, they are confidential. And if the client requests that you not mention such published projects, then you must honor such a request.
If the project in question is something internal to the company (i.e., correspondence, contracts, reports or memos for limited distribution to their employees or stockholders, etc.), then it's confidential and you don't mention it at all.
I feel that this applies whether you've signed a confidentiality agreement or not: It's part of the ethics of our profession. And when I say you don't mention such projects, I mean you don't mention them to anyone —not even to your family members, friends, or other colleagues.
Tayfun Torunoglu wrote:
Even under such disclosure agreement I am quite doubtful about applicability or validity of such clause as when we conclude our business with them what law governs our relations with our previous employers.
By the ethics of our profession, it doesn't matter whether you signed a non-disclosure agreement or not: If the work you did was confidential, it remains confidential until the client declares that it is no longer confidential. It does not matter how long ago you concluded that project or your association with that particular client.
Even if the client refused to pay you for the work for whatever reason, it is still confidential —although you might have to mention some particulars of the project in court, if you decide to sue them for payment. In such an extreme case, I recommend that you consult your lawyer.
In other words: Confidential is confidential forever, or until the client declares it to be otherwise —whichever comes first.