Application for Earnings Withholding Order for Taxes (State Tax Liability) (WG-020) Used by a state official to ask the sheriff, marshal, or constable to garnish the wages of a person owing a state tax debt. Get form WG-020 Effective: January 1, 2007 View WG-020 Application for Earnings Withholding Order for Taxes (State Tax Liability) form Go to How-to instructions for Debt Collection