"As an experienced automation engineer, I know that the work never ends and I would be available to work any hours required of me here at Fonterra Limited. I know I would be supporting two production sites and my family is supportive of me taking on this new role for the great opportunity it will provide us."

"Yes, I would be willing to work overtime hours as necessary here at Fonterra as long as I had a notification of those requirements ahead of time to ensure that childcare was secured. I'm accustomed to working overtime, evenings, weekends, and even some holidays in my current role. I am flexible and dedicated to being a reliable team member who is willing to help out when needed for the success of the team."

As you researched and applied for this job at Fonterra, the job description will do a good job of outlining the hours that are generally required for the position. The key to your answer here is letting your interviewer know that you are open to working any of the required hours for the job. If you have any time commitments outside of work due to family needs or personal needs, now is the best time to disclose those to your interviewer.