I can second this having done the same for many years. You often need to supply the company with a W8-BEN form, which they don't need to submit to the IRS, but

I can second this having done the same for many years. You often need to supply the company with a W8-BEN form, which they don't need to submit to the IRS, but they do need it on hand should they be asked for it. The form exempts the company from needing to do withholding of taxes in the US.