Whether you can invest in Oppenheimer Funds through your employer's retirement plan depends on the specific offerings of your employer's plan. Some employer-sponsored retirement plans, such as 401(k)s, offer a selection of mutual funds, which may include Oppenheimer Funds, among other investment options. To find out if Oppenheimer Funds are available in your plan, you should review the investment options provided in your retirement plan documentation or speak with your plan administrator.
Each employer's retirement plan is different, and the choice of available funds is determined by the employer and the plan provider. Furthermore, it is essential to understand the fees associated with the investment choices available to you within your employer's plan. If you require additional information or need assistance, looking on the current Oppenheimer Funds website may provide you with relevant resources or contact information.