So what’s a good balance? Every Friday send your boss an email summarizing your accomplishments for the week—nothing fancy, but quickly relating the good work you’re doing. You might think they know what you’re up to, but they’re busy. They have their own problems. They’ll appreciate it and begin to associate you with the good things they’re hearing (from you, of course). And when it’s time to negotiate for that raise (or to refresh your résumé), you can just review the emails for a reminder of why exactly you’re such a good employee.