if I resign from my job should I still get to make demands of my former colleagues because I worked there for 30 years or still feel like an employee

If you still had a pension fund owned or controlled by your previous company you would - and should - still have some say in how that was managed. Having said that, I don’t think the analogy between ‘citizen’ and ‘employee’ works that well. Citizenship is a fundamental legal right enshrined in the Universal Declaration of Human R ights, as are the rights and duties entailed by citizenship. It’s not analogus to being an employee, which is fundamentally a transactional relationship.