If he/she has these protections, they would not have posted asking for help. Truth is they likely have very few options, can be terminated any time the shareholder & founder want, and whatever shares they own will be diluted to 3% or less if they choose.
People are rarely aware of all the details of their contracts. I know that must sound funny to those who won't sign anything without reading it and understanding it but it is't rare at all for someone to be handed a 'standard' contract and signing it without fully understanding all the implications. Hence my first advice to hire a lawyer.
OP doesn't really understand their situation or their rights; that's why the submission was created.
Also considering the OP's writing, they probably don't fully grok the legalese of their contracts.
