Working Hours in Luxembourg

Understanding Working Hours in Luxembourg is important for any company employing staff in the country. Luxembourg employment law regulates not only the standard working week but also overtime, daily and weekly rest, night work, Sunday work, flexible schedules and the employer’s obligation to maintain working-time records.

For most full-time employees, the standard working time is 8 hours per day and 40 hours per week. Employment contracts or collective agreements can establish shorter working hours, but employers cannot simply extend the working week beyond statutory limits without considering the applicable working-time rules.

Where overtime or flexible working arrangements are used, working time can generally reach a maximum of 10 hours per day and 48 hours per week, subject to the relevant conditions.

For international companies planning to Hire Employees in Luxembourg, working-time rules should be addressed before employment contracts and internal HR policies are finalised.

Standard Working Hours in Luxembourg

The standard working hours in Luxembourg are:

The general 8-hour and 40-hour limits apply as the normal working-time framework. The 10-hour daily and 48-hour weekly limits become particularly relevant where overtime or flexible working arrangements are used.

For example, an employee working Monday to Friday from 09:00 to 17:30 with a non-working 30-minute lunch break would normally complete eight hours of working time per day.

However, employers should distinguish between time spent at the workplace and legally recognised working time.

What Counts as Working Time?

Under Luxembourg employment rules, working time generally means the period during which an employee is at the employer’s disposal, performs assigned duties or must remain available to carry out work.

This means that the calculation of working time in Luxembourg should be based on the real working arrangement, not only on the hours written in the employment contract.

The distinction becomes important in situations involving:

• meal and rest breaks;
• on-call arrangements;
• standby duty;
• business travel;
• shift work;
• remote work;
• flexible schedules;
• mandatory training;
• work-related meetings outside normal hours.

A break will generally not count as working time where the employee is genuinely free from work obligations and can use the period for personal purposes. By contrast, if the employee must remain available to respond immediately to work requests, the period may need to be assessed differently.

On-call and standby arrangements require particular attention.

For example, an employee who is on standby from home and can move freely, carry out personal activities and only needs to respond if contacted is not necessarily considered to be working during the entire standby period.

However, if the employer requires the employee to remain at a specific workplace, to stay within a very limited geographical area or to respond within such a short timeframe that personal freedom is significantly restricted, the arrangement may be treated differently.

Any time actually spent responding to a call, dealing with an incident or performing assigned work will normally need to be included in working-time calculations.

Business travel can also create questions. Ordinary commuting between home and the usual workplace is generally different from travel performed as part of the employee’s duties. For example, an employee travelling from the Luxembourg office to a client meeting during the working day is performing work-related travel and this period may form part of working time.

Remote work follows the same basic principle as office work. An employee working from home is still subject to working-time limits, rest requirements and overtime rules.

This is particularly relevant where employees work across several time zones. A person who starts early for meetings with Asia and then remains online late for calls with the United States may exceed normal working hours even though the work is performed remotely.

Mandatory training and employer-required meetings can also count as working time where attendance is required as part of the employee’s duties.

For employers, the practical rule is therefore simple: the key question is not only where the employee is, but whether the employee is required to remain available to the employer and perform work.

Companies should ensure that their time-recording systems capture these less obvious working periods, especially for remote employees, mobile workers, managers, technical staff and employees participating in on-call arrangements.

Relying only on a contractual schedule such as “09:00–17:00” can create gaps if the employee routinely performs additional work before or after those hours.

Maximum Working Hours in Luxembourg

Even where a company needs employees to work beyond their normal schedule, Luxembourg places clear limits on total working time.

In principle, working time including overtime must not exceed:

10 hours in a single day and 48 hours in a single week.

This means that an employer cannot routinely solve workload problems by asking employees to work 11- or 12-hour days.

For example, if an employee has already worked 9 hours on Monday, the employer generally has only one additional hour available before reaching the daily maximum.

Similarly, a 50-hour week cannot normally be treated as acceptable simply because the employee agrees to it.

Companies with recurring workload peaks should consider whether a structured working-time arrangement is more appropriate than repeated overtime.

Overtime in Luxembourg

Overtime is strictly regulated.

In a standard working-time system, hours exceeding the normal statutory or contractual limits can qualify as overtime. The general benchmark is work exceeding 8 hours per day or 40 hours per week, although the analysis changes where a valid reference-period or flexible-working system applies.

This distinction is important.

An employee who works 9 hours on one day has not necessarily generated one hour of payable overtime if the company operates a valid working-time arrangement that allows hours to be redistributed across a reference period.

Without such an arrangement, additional working hours are more likely to qualify directly as overtime.

How Is Overtime Compensated?

Luxembourg generally gives priority to compensatory rest.

One hour of overtime normally gives the employee 1.5 hours of paid compensatory time off.

Where compensation with time off is not possible, the employee may instead be entitled to payment at 140% of the normal hourly wage.

For example:

If an employee works 4 qualifying overtime hours, compensatory rest would normally amount to:

4 × 1.5 = 6 hours of paid time off.

Where the hours are paid rather than recovered, each qualifying overtime hour is generally remunerated at the applicable 140% rate.

Employers should therefore include overtime costs in workforce planning rather than treating additional working hours as financially neutral.

Flexible Working Hours and Reference Periods

Luxembourg allows employers to introduce more flexible working-time structures.

A reference-period system can allow employees to work more than 8 hours on certain days or more than 40 hours during certain weeks without every additional hour automatically becoming overtime.

However, the system must remain within the applicable limits.

Working time must generally remain below:

• 10 hours per day;
• 48 hours per week;
• an average of 40 hours per week over the applicable reference period.

For example, a business experiencing a particularly busy week might schedule an employee for 44 hours and then reduce the employee’s schedule during another week within the same reference period.

The objective is to redistribute working time rather than permanently increase it.

This can be useful for employers with:

• seasonal workload fluctuations;
• project-based work;
• variable customer demand;
• operational peaks;
• international teams working across different time zones.

However, flexible working arrangements need proper documentation and administration.

Flexitime in Luxembourg

Flexitime allows employees to adjust their daily start and finish times within an agreed framework while respecting business requirements and legal working-time limits.

The employee may have greater control over their timetable, but the arrangement does not remove the maximum limits of 10 hours per day and 48 hours per week.

A flexitime policy should clearly define:

• core working hours;
• flexible arrival and departure periods;
• minimum daily presence;
• how additional hours are recorded;
• how deficits are recovered;
• what happens at the end of the reference period;
• manager approval requirements.

Companies should also distinguish between an employee voluntarily shifting their working day and an employer requiring overtime.

The two situations can have different payroll consequences.

Breaks During the Working Day

Employees are entitled to rest periods when their daily working time exceeds 6 hours.

Luxembourg law requires one or more breaks in that situation, although the precise structure may depend on working arrangements, collective agreements or internal policies.

Employers should clearly specify whether breaks are:

• paid or unpaid;
• fixed or flexible;
• included in recorded working time.

For example, an employee who is physically present in the office from 09:00 until 17:30 but takes an unpaid 30-minute lunch break normally records eight working hours rather than 8.5.

The practical test is whether the employee remains required to be available to the employer during the break.

Daily Rest Period

Employees must generally receive at least 11 consecutive hours of rest during every 24-hour period.

This rule becomes particularly relevant for employees:

• working late;
• attending evening business events;
• working across international time zones;
• travelling for business;
• participating in emergency or on-call arrangements.

For example, if an employee finishes work at 22:00, scheduling them to resume normal work at 07:00 the following morning may conflict with the 11-hour rest requirement.

International companies should therefore be cautious when Luxembourg employees regularly join late US calls followed by early European meetings.

Weekly Rest Period

Employees in Luxembourg must generally receive at least 44 consecutive hours of rest within each seven-day period.

This requirement is designed to ensure that employees have a meaningful uninterrupted break from work, not simply isolated periods of rest between shifts.

For employers, the rule becomes especially important when employees work:

• weekends;
• rotating shifts;
• extended project schedules;
• Sunday operations;
• evening or night shifts;
• cross-border or international schedules.

A standard Monday-to-Friday employee will usually meet the requirement through the normal weekend. However, where an employee works on Saturday or Sunday, the employer needs to check whether the remaining schedule still provides the required uninterrupted weekly rest.

For example, if an employee works a normal Monday-to-Friday schedule and is then asked to work most of Sunday, the employer should not automatically schedule the employee for a full working day again on Monday without considering whether the 44-hour rest requirement has been respected.

This is particularly relevant for businesses operating seven days a week, such as logistics, hospitality, retail, healthcare or certain technical operations. These employers need structured shift planning so that weekend work is balanced with compensatory rest elsewhere in the schedule.

Weekly rest should also be considered together with the separate 11-hour daily rest requirement. Meeting one rule does not automatically mean that the other has been satisfied.

For international teams, managers should also be careful with weekend calls, urgent project work and out-of-hours communications. If an employee is expected to perform substantial work during what would normally be the weekly rest period, this can affect whether the required uninterrupted rest has actually been provided.

Employers should therefore build weekly rest into workforce scheduling from the outset rather than trying to correct the timetable after shifts have already been assigned.

Sunday Work in Luxembourg

Sunday work is, in principle, prohibited, although Luxembourg law provides exceptions for certain sectors, activities and circumstances.

Where Sunday work is permitted, employees generally receive additional protection.

For each qualifying hour worked on Sunday, the employee is entitled to a 70% salary premium in addition to the normal remuneration. Compensatory rest can also be required.

The compensatory rest generally corresponds to:

• a full day where Sunday work exceeds 4 hours;
• half a day where Sunday work is 4 hours or less.

For employers, Sunday work can therefore be substantially more expensive than standard weekday scheduling.

Businesses operating in retail, hospitality, logistics, healthcare or other sectors with weekend activity should check whether specific sector rules or collective agreements apply.

Working on Public Holidays

Working on a statutory public holiday can trigger additional remuneration.

An employee working on a public holiday may generally be entitled to the normal remuneration for the holiday together with payment for the hours actually worked and a 100% premium for those hours.

Where the public holiday also falls on Sunday, Sunday and public-holiday rules can interact. If the work also qualifies as overtime, additional overtime compensation may apply.

Employers should therefore avoid treating public-holiday work as simply another ordinary shift.

Payroll systems need to identify correctly whether hours qualify simultaneously as:

• public-holiday work;
• Sunday work;
• overtime.

Night Work in Luxembourg

Night work requires separate consideration.

For most sectors, the statutory nocturnal period runs from 22:00 to 06:00.

An employee can be considered a night worker where they perform at least three hours of their daily working time during the nocturnal period or meet other statutory criteria concerning the proportion of annual working time performed at night.

Night workers generally may not work more than 8 hours on average per 24-hour period, calculated over seven days.

For jobs involving particular risks or significant physical or mental strain, the employee may not work more than 8 hours during any 24-hour period in which night work is performed.

Is Night Work Paid at a Higher Rate?

There is an important distinction here.

Luxembourg does not impose a universal statutory night-work premium for every company.

For businesses not covered by a collective agreement, there is generally no statutory percentage increase solely because the employee works at night.

Where a collective agreement applies, it must provide a night-work supplement of at least 15%, although the exact amount depends on the relevant agreement. Separate rules apply in sectors such as HORECA.

Employers should therefore check the applicable collective agreement instead of assuming either that all night work attracts a 15% premium or that no supplement is required.

Part-Time Working Hours in Luxembourg

Part-time employees work fewer hours than the standard working time applicable within the company.

Their employment contracts should specify, among other things:

• agreed weekly hours;
• distribution of hours across the week;
• conditions for additional or overtime hours;
• permitted flexibility.

Part-time schedules can have some flexibility.

Under the general framework described by Luxembourg’s official guidance, actual daily and weekly hours can exceed the contractual schedule by up to 20%, provided the average over the relevant four-week period remains consistent with the contractual weekly working time. A contract can provide for different flexibility, subject to the legal limits.

For example, an employee contracted for 20 hours per week may, under an appropriate arrangement, work 23 hours in one week and fewer hours in another, while maintaining the required average.

Part-time employees must not simply be used as flexible labour without defined scheduling rules.

Remote Working and Working Hours

Remote employees remain subject to working-time rules.

An employee working from home does not become exempt from:

• normal working hours;
• maximum daily limits;
• maximum weekly limits;
• rest periods;
• overtime rules.

This is especially important for international teams.

A Luxembourg-based employee may be technically able to respond to colleagues in Asia early in the morning and US colleagues late in the evening, but the employer still needs to consider daily working time and the required 11-hour rest period.

Remote-work policies should therefore define:

• expected availability;
• normal working hours;
• communication windows;
• overtime approval;
• time-recording procedures.

For employees living in France, Belgium or Germany, regular remote working can also create cross-border tax and social security issues.

These questions should be considered as part of wider Workforce Management in Luxembourg.

Employers Must Keep Working-Time Records

Working-time record keeping is not optional.

Luxembourg’s Labour Inspectorate states that employers must maintain a register or file recording:

• beginning of the working day;
• end of the working day;
• duration of daily work;
• extensions of normal working time;
• Sunday hours;
• statutory public-holiday hours;
• night work;
• remuneration paid in connection with those hours.

The records must be available if requested by the Inspection du travail et des mines (ITM).

This is particularly relevant for employers using flexible schedules or allowing significant remote work.

Simply stating “40 hours per week” in the employment contract does not replace the need for appropriate working-time controls.

Why Working-Time Records Matter

Accurate records help employers demonstrate compliance with:

• maximum working hours;
• overtime requirements;
• Sunday work;
• night work;
• public-holiday work;
• daily and weekly rest periods.

They also provide evidence when an employee disputes the number of overtime hours worked.

For growing companies, time recording should therefore be integrated with HR and payroll rather than managed through informal spreadsheets or manager memory.

Collective Agreements and Working Hours

Employers should always check whether an applicable collective agreement changes the general working-time framework.

Collective agreements may establish different or more favourable conditions relating to:

• weekly working hours;
• shifts;
• overtime supplements;
• night-work premiums;
• Sunday work;
• breaks;
• reference periods.

For example, sector-specific arrangements can provide additional compensation beyond the general statutory requirements.

The general Labour Code rules should therefore be treated as the baseline rather than the complete answer for every employee.

Working Hours Should Be Defined in the Employment Contract

Working time should be clearly reflected in employment documentation.

An employment contract should identify the employee’s working hours and normal working schedule.

For part-time employees, additional detail is particularly important because the contract should specify both the number and distribution of working hours.

Employers should also update documentation where a significant permanent change occurs.

For example, moving an employee from:

40 hours per week to 32 hours per week

or introducing a substantially different permanent working pattern should not remain an informal arrangement between the employee and manager.

The contractual, payroll and HR records should remain aligned.

For broader contract requirements, see our Employment Law in Luxembourg guide.

Working Hours and Employee Benefits

Working-time arrangements affect more than payroll.

They can influence:

• annual leave calculations;
• public-holiday treatment;
• overtime compensation;
• part-time benefits;
• absence administration;
• workforce costs.

Part-time employment may also require benefits or remuneration to be calculated proportionately depending on the entitlement.

Companies should therefore review Employee Benefits in Luxembourg alongside working-time rules rather than managing the two areas separately.

Working Hours When Hiring Through an EOR

International companies without a Luxembourg legal entity can employ workers through an Employer of Record in Luxembourg.

The EOR provides the local employment structure and can support:

• employment contracts;
• payroll;
• statutory deductions;
• leave administration;
• working-time documentation;
• HR administration.

However, the client company normally remains responsible for operational management.

This means managers should not instruct an EOR-employed worker to routinely exceed Luxembourg working-time limits simply because the legal employment administration is outsourced.

The Working Hours in Luxembourg rules still apply to the employment relationship.

Common Working-Time Mistakes

Working-time compliance problems often arise from ordinary management practices rather than deliberate violations.

Common mistakes include:

• assuming salaried employees are exempt from working-time limits;
• treating every hour above 8 hours as overtime despite a valid reference-period arrangement;
• failing to pay or compensate genuine overtime;
• allowing employees to work more than 10 hours in a day;
• regularly exceeding the 48-hour weekly maximum;
• ignoring the 11-hour daily rest requirement;
• failing to account properly for Sunday work;
• assuming all night work receives the same premium;
• failing to check collective agreements;
• not recording working hours accurately;
• treating remote employees as exempt from time controls.

These problems become more common when line managers work in another country and are unfamiliar with Luxembourg employment rules.

Example: Standard Office Employee

Consider an employee working a standard office role:

Monday–Friday: 08:30–17:00
Lunch break: 30 minutes unpaid
Working time: 8 hours per day
Weekly total: 40 hours

This is consistent with the standard full-time framework.

If the employee is then asked to work from 08:30 until 20:00 to complete a project, the employer should assess the additional hours, maximum daily working time and overtime rules rather than simply accepting the extended day.

Example: International Team Across Time Zones

A Luxembourg employee begins work at 08:00, attends normal European meetings during the day and then joins a US management call ending at 22:00.

Even if the employee voluntarily agrees, the employer still needs to consider:

• total working hours;
• breaks;
• maximum daily working time;
• overtime;
• required daily rest before work resumes.

Repeated schedules of this kind can create a compliance issue.

International workforce planning should therefore distribute meeting times rather than consistently placing the burden on employees in one jurisdiction.

What Employers Should Check

Before implementing working schedules in Luxembourg, employers should confirm:

• contractual weekly working hours;
• daily work schedule;
• applicable collective agreement;
• reference-period arrangement where relevant;
• overtime approval process;
• overtime compensation;
• break policy;
• daily and weekly rest;
• Sunday and public-holiday work;
• night work;
• part-time scheduling;
• remote-working arrangements;
• working-time recording.

For companies with employees across multiple European jurisdictions, Luxembourg-specific requirements should be integrated into global HR systems rather than replaced by one universal working-time policy.

How Brain Source International Can Support Employers

Brain Source International helps international businesses recruit, employ and manage professionals in Luxembourg.

Our support can include:

• international recruitment;
• executive search;
• Employer of Record services;
• payroll coordination;
• workforce management;
• onboarding;
• HR administration;
• international HR consulting.

Businesses building a local team can explore our Hire Employees in Luxembourg services.

Companies without a Luxembourg legal entity can use an Employer of Record in Luxembourg to establish the local employment infrastructure required to employ workers.

For broader employment requirements, see Employment Law in Luxembourg.

Companies managing growing teams can also review Workforce Management in Luxembourg and Employee Benefits in Luxembourg.

Frequently Asked Questions

What are the standard working hours in Luxembourg?

Standard working time is generally 8 hours per day and 40 hours per week.

What is the maximum working day in Luxembourg?

Working time including overtime is generally limited to 10 hours per day.

What is the maximum working week?

The general maximum is 48 hours per week, including overtime, subject to applicable working-time rules.

How is overtime paid in Luxembourg?

Overtime is generally compensated with 1.5 hours of paid time off for each overtime hour. Where compensatory leave cannot be provided, the hour may be paid at 140% of the normal hourly wage.

How much rest must employees receive?

Employees are generally entitled to at least 11 consecutive hours of daily rest and 44 consecutive hours of weekly rest.

Can employees work on Sundays?

Sunday work is generally prohibited but exceptions exist. Where permitted, qualifying Sunday work normally carries a 70% premium and compensatory-rest rights.

What hours count as night work?

For most sectors, the nocturnal period is 22:00 to 06:00. Specific rules apply to certain sectors.

Is there a mandatory night-work premium?

Not universally. Companies without an applicable collective agreement generally do not have a statutory percentage premium solely for night work. Where a collective agreement applies, it must provide a night-work premium of at least 15%.

Do employers need to record working hours?

Yes. Employers must maintain working-time records covering daily start and end times, duration, extensions, night work, Sunday work and statutory public-holiday work.

Working Hours in Luxembourg: What Employers Should Remember

The central rule is straightforward: Working Hours in Luxembourg are generally 8 hours per day and 40 hours per week.

The complexity begins when employers introduce overtime, flexitime, part-time schedules, night shifts, Sunday work or international remote-working arrangements.

For employers, the most important compliance controls are therefore:

maintaining accurate time records, respecting the 10-hour daily and 48-hour weekly maximums, ensuring required rest periods, compensating overtime correctly and checking whether a collective agreement changes the general rules.

Companies that incorporate these requirements into employment contracts, payroll and workforce planning from the beginning are far less likely to encounter working-time disputes as their Luxembourg teams grow.