Final answer:
When the economy expands, automatic stabilizers increase tax receipts and decrease government spending, reflecting a contractionary fiscal policy.
Step-by-step explanation:
If the economy expands, automatic stabilizers in fiscal policy will cause tax receipts to rise and government spending to fall. This is because, in a stronger economy, individuals and businesses earn more, which translates to higher tax revenues from personal income and corporate profits.
Simultaneously, with a lower unemployment rate and fewer layoffs, there is a reduced need for government spending on social safety net programs such as unemployment benefits, welfare, Medicaid, and others. This situation embodies a contractionary fiscal policy, which occurs automatically without discretionary changes in tax laws or spending mandates.