Employers / HR

Cross-border telework clarity for Luxembourg employers

Help HR, finance and employees understand where tax-day thresholds, social-security telework share and housing decisions create review points.

Official source · Last reviewed 2026-05-04 Private-sector orientation, not legal or tax advice.

What WunnCheck helps structure

The safest use case remains private-sector employees with one Luxembourg employer. Public-sector work, multi-employer work, and multi-country activity need review.

Employee self-orientation

Employees can see more clearly where housing, commuting and telework create a real review point.

Scenario comparison

France, Germany and Belgium stay readable through transparent assumptions rather than black-box scoring.

Risk flags

Tax threshold, telework share, possible A1 handling and out-of-scope situations are surfaced calmly.

Careful country-by-country threshold reading

Private-sector simplified orientation only. All workdays outside Luxembourg may count, not only formal home-office days.

Residence country Tax-day threshold Social-security telework share Typical review trigger
France 34 days Below 25% is usually cleaner; 25% to below 50% may stay under the framework agreement with an A1 process; 50%+ sits outside the framework path. Accumulated workdays outside Luxembourg, stable hybrid pattern, or additional work outside Luxembourg.
Germany 34 days Same telework-share logic; an A1 process may be required. Two home-office days per week plus additional outside-Luxembourg days across the year.
Belgium 34 days Same careful split between fiscal threshold and social-security telework share. Hybrid work combined with travel or files touching several entities or countries.

Public-sector work, multi-employer work, or multi-country activity need separate review.

Sample employer report

Residence country: Germany (Trier)

Planned telework pattern: 2 days per week

Estimated tax-day exposure: monitor closely

Social-security telework share: framework corridor review

Review flags: possible A1 process, outside-Luxembourg days to consolidate, housing / commute assumptions to confirm.

Assumptions used: editable housing and commute benchmarks plus official rules loaded on 2026-05-04.

Official source · Last reviewed 2026-05-04 Not legal or tax advice.

What we need from you

  • Employee residence country
  • Luxembourg employer entity
  • Expected weekly home-office pattern
  • Other workdays outside Luxembourg
  • Public / private sector context
  • Multi-employer or multi-country activity
  • HR contact
  • Preferred output: employee guide, workshop, scenario review, or partner handoff

Request an employer discussion

WunnCheck helps frame the questions, not replace counsel. We follow up to confirm the right next step.