There is a significant difference between public works and working in the private sector. Public works often offer better pay. There is generally more job security, excellent benefits, and other perks such as a pension. However, the private sector may offer faster growth, better tech, and other perks. Discuss with the interviewer why you are choosing to find a role in the public sector versus private.
"Each sector, private or public, come with their challenges; however, I feel that the offering from the public works sector better fits my needs. There is more job security, and opportunities for competitive benefits and pension; all factors that I consider as I raise and support my family."
"I have spent time comparing public and private sector work, as I want to begin my career on the right foot. A recent Fraser Institute report showed me that public works jobs pay more, on average, but also offer more job security in unionized and non-unionized roles. Starting my career, it's important to me that I build a secure future for myself. For those reasons, public sector work became the clear choice."