Yes, you can. By default, every new contact you add to Google Contacts is saved in the “Contacts” label. If you share this label, all your contacts will be shared automatically.

But it’s usually not a good idea to share everything. You might end up sharing personal contacts or details that your team doesn’t need. The safer way is to make a new label just for work contacts, add the ones you want, and share that label. This keeps things clean and makes sure only the right people and information are shared.