Yes! You should always be working to build and strengthen your employer brand. The only difference between the careers page when you do and do not have open jobs should be that your section on current job postings will be empty and encourage job seekers to check back in the future. You can also consider including one or more ways to contact you in the meantime. For example, depending on the sophistication of the software tools you have available, you could provide a job alert functionality (to notify prospective candidates when new jobs are posted), a simple email address (for them to send their resumes in and ask if and when specific jobs might come available), or even an “evergreen” posting for general interest (often linked as a regular job posting but described as a central place for job seekers to submit their resume and areas or roles of interest so you can store possible future candidate information and reach out to them when new roles are opened).