The Workplace Relations Commission rejected Karen O'Sullivan’s constructive unfair dismissal claim against Radisson Blu Hotel Little Island in a decision dated 23 July 2026. The adjudication officer found she had not shown a valid reason for resigning without using the hotel’s grievance procedure. O'Sullivan said she resigned after receiving a letter from the former head of human resources and because money she said was owed remained unpaid. The officer described the letter’s tone as threatening, but found O'Sullivan had not established that resignation was her only option. No redress was awarded.