Learn about the ERISA DOL and retirement plan audit services offered to businesses in Dallas and across Texas - Dallas 401k Audit. Here are answers to questions you may have about the key features, benefits, and rules of your plan.When can I enroll in the plan? Calvetti Ferguson offers comprehensive 401(k) plan audit services in Dallas. Ensure your plan complies with ERISA regulations. Learn about the ERISA Audit and benefit plan audit services offered to Dallas and Texas 401k plan sponsors - JLK Rosenberger - ERISA Audit - Dallas, TX 75201. Call 214-219-4220 to learn about ERISA and employer-provided insurance benefits. Contact attorney Mark A. Ticer in Dallas. ERISA does not require any employer to establish a retirement plan. It only requires that those who establish plans must meet certain minimum standards.