Five client advisors from UBS's Chiasso branch, including three senior managers, have resigned amid a toxic work environment following the bank's takeover of Credit Suisse. The management, led by Marc Genova and Matteo Franceschini, is reportedly implementing significant layoffs, targeting a reduction to 85,000 employees within two years. Despite the departures, many employees are choosing to stay, particularly in back office roles, as UBS navigates new home office regulations and aims for further cost savings.