We are an EPC company. Material transportation is an essential part of our/any project. We are facing an issue regarding the compliance of daily wagers (labor engaged for unloading trucks). As unloading material is a one-time activity, we cannot show them in our records. They may not be available next time as they work only for money and need to be paid on the same day. In this situation, what is the appropriate and safe practice to safeguard ourselves in view of labor law compliance?