I just started work for a new Oil & Gas Pipeline Company in Texas. While working at a previous similar company our welders were paid hourly, then they receive a daily per diem, rig pay (for use of their welding rig by the hour), tool pay (for the use of their welding tools by the hour). We also have some employees that are paid when they use their personal vehicles for work (truck pay, paid by the day). My question is this: Which are considered taxable monies and which are non taxable? At my previous employer, all of these monies were paid through account payable and not taxed. This new company wants the pay through payroll.