Final answer:
The three correlated personality trait dimensions for hospitality service employees' job success are extraversion, agreeableness, and conscientiousness, which relate to sociability, cooperativeness, and organization respectively.
Step-by-step explanation:
According to the text and slides, the three personality trait dimensions found to have important correlations with hospitality service employees' job success are extraversion, agreeableness, and conscientiousness. Individuals high in extraversion tend to be sociable and outgoing, which is beneficial in service-oriented roles requiring interaction with guests. Agreeableness reflects a person's tendency to be cooperative and pleasant, attributes that contribute to a positive customer service experience. Lastly, conscientiousness indicates a level of organization, discipline, and responsibility, essential for ensuring quality service and maintaining operational standards in the hospitality industry.