Yes, it is necessary to report any income earned while receiving unemployment benefits in Montana. Failure to report additional earnings can be considered fraudulent and may result in overpayment of benefits, penalties, and even criminal charges. All sources of income, including wages, self-employment earnings, tips, commissions, holiday pay, and severance pay, must be reported. It is important to report the income during the week it was earned and provide accurate details about the amount and source. The reported income will be considered when determining your eligibility and the amount of unemployment benefits you are eligible to receive. Prompt and accurate reporting is vital to ensure compliance with the state's unemployment regulations and to maintain the integrity of the unemployment insurance program.