@RobinM7x not yet I think, from how the other employees interacted with him. It looks like he was writing his resignation letter because he couldn't think of another way to resolve the situation, and decided resigning of his own accord would be better than getting dismissed by the company.
no wonder japan have high suicide rate, if i were him, i might go far away with that girl and abandon monotonous life who makes me stressed and depressed all along