Mass. Gen. Laws ch. 14 § 8
To promote the fair and equitable enforcement of the tax laws of the commonwealth, the commissioner shall establish annual training programs for all employees of the department of revenue, including those in managerial or supervisory positions, who work directly in tax administration, in particular those in the audit, customer service and legal bureaus. Such training shall be designed to ensure that audits are conducted on a consistent basis and that information provided to taxpayers is accurate. Further, the commissioner shall establish periodic training programs to ensure that all employees who work directly in tax administration are informed of and understand the department of revenue's policy concerning recent developments in the tax law, including the department of revenue's interpretation of recent court decisions and regulatory changes.
Mass. Gen. Laws ch. 14, § 8