Examples:

• What are your hobbies outside of work?
• What are your hobbies outside of work?
• What are your hobbies (or the activities that you enjoy in your spare time)?
• What are your hobbies or interests?
• What are your hobbies and interests?
• What are your hobbies, John?
• What are your hobbies/interests? What do you like to do in your free time?
• What are your hobbies?
• What are your hobbies?
• What are your hobbies?