India's recently implemented new labour codes, which came into effect on November 21, 2025, have led to a substantial one-time financial impact on the third-quarter (Q3 FY26: October-December 2025) earnings of leading IT service companies. This development is a direct consequence of the redefined 'wages' under the new legislation, which broadens the base for calculating statutory employee benefits such as gratuity, provident fund contributions, and leave encashment, compelling companies to account for higher past service liabilities. Tata Consultancy Services (TCS), India's largest IT firm, reported a significant one-time statutory impact of ₹2,128 crore on its Q3 FY26 profits, primarily attributed to increased gratuity costs and long-term compensated absences. Infosys, another IT giant, also disclosed a one-time exceptional charge of ₹1,289 crore for the same quarter to align with the new labour code provisions. HCLTech similarly reported a one-time impact of ₹956 crore on its Earnings Before Interest and Tax (EBIT), translating to ₹719 crore at the net income level, due to these new regulations. The cumulative impact on these three companies alone exceeds ₹4,000 crore, corroborating the headline's claim. While this represents a significant one-time adjustment, company managements generally indicated that the recurring impact on operating margins in subsequent quarters is expected to be minimal, typically ranging from 10 to 20 basis points. The news category for this story spans Business, Finance, and Technology, specifically focusing on the Indian IT sector's financial performance. Moneycontrol, the source, is generally considered a credible financial news platform in India, despite some reports of a right-center bias and occasional mixed factual reporting in non-core financial content. The claims are well-corroborated by multiple other reputable Indian business news sources, affirming the accuracy of the report.