Large corporations operate with complex structures, multiple workplaces, and staffs of hundreds or thousands of employees. This organizational complexity exponentially multiplies the points of risk in labor matters. An exhaustive work document audit has become an indispensable tool for these companies, not only to comply with legality, but to protect their reputation and avoid sanctions that can reach millions.
In 2026, the Labour Inspectorate It maintains an unprecedented active control over companies, with fines ranging from 70 euros for minor offences to 225,018 euros for very serious offences. For large corporations, these figures can be multiplied exponentially when they affect multiple workers or workplaces. In Cantabria alone, the Inspectorate flourished more than two million euros in frauds and sanctions during 2025, with a 60% increase in occupational risk prevention offences compared to 2024.
What is an audit of work documentation?
The audit work documentation is a comprehensive analysis of all the documentation and procedures of a company related to compliance with the labour and social security obligations. This process makes it possible to identify hidden contingencies that, if not corrected in time, can result in severe economic sanctions, legal conflicts with workers or significant reputational damage.
Unlike an ad hoc review, a comprehensive labour audit systematically examines all critical areas of the company, from corporate structure and contracts to social security contributions, through working time records, trade union representation or contract modification and termination procedures.
Critical areas to be covered by a labour audit in large corporations
An effective labor documentation audit should systematically analyze all areas of risk that may result in sanctions or judicial conflicts. Below, we detail the fundamental aspects that any major corporation must review to ensure compliance.
General structure and workplaces
Large corporations often operate with multiple workplaces, each with its own particularities. It is essential to verify that all centres comply with the Legal notice of initiation before the Labour Authority and have the corresponding registration in the Social Security.
In addition, in case the corporation has made acquisitions from other companies, it is essential to analyze whether there has been a business succession and its implications. Let us remember that both the assignor and the assignee respond jointly for three years of the labor obligations prior to the transmission.
Recruitment: the most controversial point
Recruitment is one of the areas that generates the greatest conflict and sanctions. The Labour Inspectorate's Shock Plan, which began in 2025, remains active in 2026 focusing specifically on detecting irregularities in temporary and permanent contracts. In Cantabria, during 2025 899 contracts were transformed into indefinite ones that were in irregular situation thanks to these actions.
An audit of rigorous labour documentation must verify that each contractual modality used corresponds to the actual nature of the job and does not cover up recruitment in law fraud. false self-employed, the detection of which may involve retroactive economic responsibilities for unpaid social security contributions, in addition to the corresponding penalties.
Wage structure and pay concepts
Many big companies commit costly errors in the wage structure, from off-roll payments that are not recorded to misdocumented in-kind remunerations or incorrectly applied extra-wage concepts.
The audit must verify that all pay concepts are correctly reflected in payroll, that the minimums of the applicable collective agreement are respected and that the absorption and compensation mechanisms have been correctly applied where appropriate. Payment of off-rolling concepts constitutes a serious infringement that may result in fines of up to 7,500 euros per worker concerned.
System and working time: working time records and possible digital reform
Daily working time records is mandatory since 2019. In addition, in recent months there has been a policy reform that, if approved in the terms known to date, could impose new requirements for digitization, traceability and accessibility for the Labour Inspectorate. It is therefore advisable for large corporations to review their current systems and value their ability to adapt to future obligations.
In the area of working time records, non-compliance may result in relevant penalties and, where appropriate, a future reform could further strengthen or give effect to the control regime and corporate obligations.
It is also essential to verify the correct payment of overtime, the fulfilment of compulsory breaks and the adaptation of holidays and permits to the applicable regulations.
Social security: contribution and membership
The Social Security concentrates approximately half of all sanctions imposed by the Inspectorate. The most common violations in large corporations include:
- False part-time days: full-time but part-time workers
- Infringements or contributions on a lower-than-due basis
- Lack of high or late affiliations
- Bonuses applied without meeting legal requirements
An audit of work documentation should carefully review contributions over the past four years, which is the limitation period for claims by the General Treasury of Social SecurityIn addition, it must verify that all administrators and senior officials are correctly affiliated according to their level of control and ownership interest.
Legal representation of workers
Large corporations often rely on works councils and trade union delegates. It is essential to audit that the choice of these representatives has been made in accordance with the law and that the company respects all its rights: credit for paid hours, premises, bulletin boards, right of information and consultation, etc.
Violation of workers' rights to representation constitutes a serious violation and can generate additional collective labour conflict, with strikes or complaints that increase the reputational risk of the company.
Outstanding Disputes: quantifying the actual risk
Any audit work documentation must include a detailed analysis of pending disputes: legal claims, sanctioning procedures of the Labour Inspectorate, claims of quantity or any other situation that may result in legal or economic responsibilities for the company.
This analysis allows to quantify the potential economic impact and make informed decisions about defense strategies, negotiation or provision of funds for contingencies.
New Inspection Strategies in 2026: Mass Data Crossing and Automated Control
In 2026, the Labour Inspectorate has consolidated the use of massive cross-checking of data from the Spanish Tax Agency, Social Security, SEPE and other administrations. This system generates automatic alerts when it detects suspicious patterns, such as high sales with few declared hours, wage costs that do not fit the collective agreements or bonuses applied without meeting requirements.
The priorities of the Inspectorate in 2026 focus on:
- Prevention of occupational risks: especially falls in height and serious work accidents
- Day registration: verification of compliance with current regulations and of possible adaptation to future reform.
- Irregular employment: detection of unemployed and false self-employed workers
- Part-time contracts: control that the actual days coincide with those declared
- Digital disconnection: especially in teleworking companies, where the systematic sending of out-of-day mails or messages is sanctioned
For large corporations, this means that the probability of inspection has increased and inspectors arrive with very precise prior information about possible irregularities. An audit preventive labor documentation allows to identify these inconsistencies before the inspection arrives.
Conclusion: labour audit as a strategic investment
For a large corporation, the million-dollar sanctions Infringements are not the only risk. Reputational damage, loss of access to public subsidies, exclusion from bidding or deterioration of the working environment can have much more serious economic consequences in the medium and long term.
One audit work documentation exhaustive is not an expense, but a strategic investment that allows to detect hidden risks, correct deviations before they result in sanctions and demonstrate the commitment of the company to the normative compliance and the protection of the rights of its workers.
In Afianza We have extensive experience in carrying out labor audits for large corporations. Our team of specialized advisors thoroughly analyzes all the critical areas of your company, identifies contingencies and provides you with a detailed report with specific recommendations to minimize risks and ensure legal compliance. Protect your company from millions of penalties and labor disputes: contact our audit experts work documentation.
