Sensitive employee data under Brazil's LGPD

Employers process personal data constantly: hiring documents, payroll information, medical certificates, benefits, access logs, productivity data, disciplinary records and communications metadata.

This data is not neutral. It can affect employment opportunities, promotions, dismissals, workplace reputation and discrimination risk. Under LGPD, that makes governance especially important.

For international readers, the Brazilian issue resembles a global concern: employment data is collected inside a relationship of dependency. The worker often cannot negotiate data practices as freely as a consumer choosing an app.

LGPD gives special treatment to sensitive personal data. In employment, this may include health data, biometric information, disability-related records, union-related information and other categories that can expose a person to unequal treatment.

Employers may have legitimate reasons to process some of this data, such as occupational health, workplace safety, legal obligations or benefits administration. But legitimacy does not eliminate the need for proportionality and safeguards.

The practical rule is to collect the minimum data necessary, restrict access, define retention periods and document the legal basis for each processing activity.

Consent is often fragile in employment relationships because of power imbalance. A worker may feel unable to refuse a request from the employer, even when the request is presented as voluntary.

This does not mean consent is impossible in every workplace situation. It means legal teams should be cautious before making consent the default legal basis for employee data processing.

In many cases, another legal basis may be more appropriate, such as compliance with legal obligations, contract execution, protection of health, regular exercise of rights or legitimate interest, depending on the activity.

Workplace monitoring can include cameras, access badges, device logs, productivity software, geolocation, email controls and biometric timekeeping. Each tool has a different level of intrusiveness.

Under LGPD, employers should be able to explain the purpose of monitoring, the proportionality of the tool, who can access the data and how long the information is kept.

Biometric data is especially sensitive. If used for access control or timekeeping, it should be protected with strong security measures and a clear justification.

A serious workplace privacy program should include a data inventory, HR data policies, access controls, retention schedules, vendor review, incident-response procedures and employee-facing transparency.

Employers should also review third-party providers, such as payroll systems, benefits platforms, occupational-health services and productivity tools. Outsourcing does not eliminate responsibility.

Training matters because workplace data is handled by managers, HR teams, IT staff and external vendors. A policy that no one understands will not control risk.

LGPD turns employee data into a core governance subject. The workplace is no longer a privacy-free zone simply because the employer has operational needs.

The best legal approach is not to block legitimate management, but to make data use necessary, transparent, secure and proportionate.