While Jasmine could tolerate Mick's lack of accomplishments, she wouldn't tolerate him destroying Vintage Deluxe's reputation.
Since his incompetence had now affected Vintage Deluxe severely, the only thing to do was to fire him.
Still, there were procedures when it came to dismissal as the employee must sign a contract and the incident had to be proven. If said employee had made a severe blunder that had ultimately affected the company or incurred losses, they could terminate their contract