Thanks for your patience. To answer your questions:
- did the employer have the right to add extra anti-competition restrictions in the termination letter, which were not a part of my contract?
There is nothing stopping them from doing that but you dis not have to accept these changes. At that stage any changes would have had to be introduced with your consent, which you could have withheld. So my only concern is whether by signing the letter and basically agreeing to the clauses you have agreed for the changes to be made.
- are there clauses binding, if I don't have the list of customers anymore and the termination letter had no appendix?
These factors will not make them automatically unenforceable. These are more minor issues which a court can work around and still make the clauses enforceable if necessary. So do not rely alone on these issues to try and argue this
- what are the sanctions for breaching the agreement?
It could be a claim for damages if they can show that they have suffered any losses as a result of your breach, or it could be a court injunction, preventing you from doing aomething, like making further contact.
- do I have any options to re-negotiate the agreement after I have signed the termination letter? I felt under pressure signing it and I don't believe I fully understood it.
Nothing stopping you from trying to do this but legally it will only likely happen with their consent. You were not und r duress to sign it, there would have still been an opportunity to say no but you signed it, so no harm in trying at least but it would be down to them now.
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