Your average weekly wage (AWW) is the foundation of your wage replacement benefits calculation, so it is critically important that it be calculated correctly. In South Carolina, the AWW is generally calculated based on your actual wages in the 52 weeks prior to your injury. If you worked for less than a year, the commission will use your actual earnings for the period you worked. Over time, tips, commissions, and bonuses may or may not be included depending on their regularity. Errors in AWW calculation, which insurance companies sometimes make to their advantage, can significantly underpay your benefits.