Step-by-step explanation:
1. Working "off of books involves working within the underground economy, in which government economic activities are hidden to avoid taxation or laws, or in which products and services are sold illegally.
2. As the government is shielded from activities within the informal economy, they would not be included in GDP figures.
3. If GDP is calculated accurately, the government will find it difficult to set strategies to accomplish macroeconomic objectives. Normally, the government does not receive tax revenue from illegal sales. This could result the government to raise taxes on non-underground company individuals and companies, thus prohibiting their jobs, saving and investment.