These materials are custom-designed materials used to celebrate 401(k) Day, which is an annual celebration spotlighting the importance of employer-sponsored profit sharing and 401(k) plans. This is a national day recognized by the Profit Sharing/401(k) Council of America and is officially the day after Labor Day. Materials like posters, payroll stuffers, newsletters and postcards are used to promote a company's 401(k) plan by reminding employees of the valuable features and benefits of their plan.