Productivity How long should you keep your business and tax records? The proper length of time to store a document is dependent on the action, expense or event which a document records. The IRS has established several basic record retention ... Productivity Pay the Construction Workers Right with the WH 347 Certified Payroll Form Certified payroll reports Form WH-347. By the US federal law, known as the Davis-Bacon Act of 1931, all contractor and subcontractor employers are obliged to submit weekly certified payroll ...