For many human resources directors, executives and managers, giving birthday cards to employees is a common practice. For those shopping for bulk birthday cards for employees, there is an advantage to buying cards created specifically for staff. Employee birthday cards are designed to not only express birthday wishes, but to also convey appreciation for the employee and what they do for your business. Birthday greeting cards from Hallmark Business Connections allow you to select an inside message that matches what you want to say to your employees, making your card unique from other bulk birthday cards.