On group vision insurance plans, the insurance premium can be paid by a combination of the employer and the employees. Typically, employers cover a portion of the premium as part of their benefits package to enhance employee compensation, while employees may pay the remainder through payroll deductions. The specific arrangement can vary by company and plan, with some employers fully covering the premiums and others requiring employees to contribute a set amount. It's essential for employees to review their specific plan details to understand the premium structure.