In a landmark move set to reshape India’s labour landscape, govt notified the implementation of all four labour codes, bringing into effect one of the most ambitious labour reforms in the country’s post-independence history. The rollout marks the realisation of “One India, One Law”- a unified labour framework that replaces a century of fragmented statutes with a consolidated, modern regulatory system. The four legislations cover various aspects of wages, social security, occupational safety, health and working conditions and employee relations aspects.Together, these codes subsume 29 central labour laws into a single legal structure aimed at improving transparency, reducing compliance complexity and enabling uniformity across states. Under the earlier system, overlapping definitions, varying state amendments and multiple registrations created operational hurdles for both employers and workers. The new framework introduces standardised definitions, rationalised thresholds and digitised processes intended to streamline compliance across the country.While the codes are now in force nationwide, supporting rules under both central and state jurisdictions are still to be notified. The press release issued by govt clarifies that they would engage with the public and stakeholders in the development of rules, regulations, and schemes under the new codes. Additionally, to ease the transition, the release confirms that the relevant provisions of existing labour laws will remain in force during the transition period.Changes for industryThe implementation of the labour codes will fundamentally reshape workforce management across industries. By introducing a uniform definition of wages, organisations will face greater clarity in benefit calculations for gratuity, ESI, leave encashment, overtime and statutory bonus, reducing litigation risk but potentially increasing employment costs. This change demands a thorough review of salary structures and payroll systems to ensure compliance. Additionally, the broader definition of ‘worker’ will extend entitlements such as overtime, leave encashment, and retrenchment compensation to a wider employee base, requiring companies to reassess classifications and related policies.Changes for workersFor workers-particularly those in the unorganised, gig and platform sectors-the reforms mark an unprecedented expansion of protections. The code on wages ensures a statutory minimum wage for all categories of workers and prohibits gender-based wage discrimination. The Social Security Code extends benefits to gig workers, platform workers and fixed-term employees for the first time. A national database of unorganised workers and a dedicated Social Security Fund aim to enable targeted delivery of welfare benefits. The OSH Code enhances workplace safety norms, regulates working conditions and ensures portability of benefits for migrant workers.A new chapter for India’s labour ecosystemThe enforcement of the labour codes marks a pivotal moment in India’s economic reform journey. If implemented effectively, the unified framework promises greater transparency, stronger worker protections and a more predictable regulatory environment for businesses. While final state rules and clarifications are awaited, Friday’s notification marks the beginning of a new chapter – one where India’s labour laws, finally, speak in a single, coherent voice.(The writer is partner, people advisory services – tax, EY India)