What Is the Indonesian Fasting (Ramadan) Period? A Practical Guide for Hiring Managers

Companies that employ staff from Indonesia are increasingly asking, “When does the fasting period start and end?” and “How should we adjust working hours during that time?” Indonesia has the world’s largest Muslim population, and the fasting month (Ramadan) is one of the most important religious observances of the year for many Indonesian workers. This article organizes the basics of the Indonesian fasting period and the practical responses hiring managers should know, from a systems-check and hiring-operations perspective.

What Is Indonesian Fasting (Ramadan)? Basic Facts About the Period

The fasting month refers to the ninth month of the Islamic calendar (Hijri calendar), Ramadan. During this period, Muslims practice sawm (puasa)—abstaining from food, drink, and smoking from sunrise to sunset—which is one of the Five Pillars of Islam. About 87% of Indonesia’s population is Muslim, and fasting is an annual observance that affects society as a whole, including workplaces, schools, and homes.

Because the Hijri calendar is a lunar calendar, its dates drift relative to the solar (Gregorian) calendar. As a result, the fasting month moves earlier by roughly 10–11 days each year. In 2024 it ran from mid-March to early April, and in 2025 it shifted into early March. If Japanese hiring managers assume it falls at “the same time as last year,” they can miss the actual dates. The precise start and end dates each year are officially announced by Indonesia’s Ministry of Religious Affairs (Kementerian Agama) based on sighting of the new moon (rukyat). For HR teams in Japan, checking that official announcement is more reliable than calculating the calendar independently.

Note also that the several days beginning the day after fasting ends are a major holiday period known as Lebaran (Idul Fitri). For many Indonesian workers, handling requests to return home or take leave around this time—more than the fasting period itself—often becomes the key practical issue in hiring operations.

When Is the 2026 Fasting Period? Approximate Dates and How to Confirm

On the 2026 Hijri calendar, the fasting month is expected to begin around mid-February and end (Lebaran) around mid-March. This is only an estimate based on astronomical calculation; the official start and end dates are finalized by Indonesia’s Ministry of Religious Affairs a few days beforehand, based on new-moon observation results. In some years, the government announcement and local Islamic organizations’ determinations differ by about a day, and the day employees take off for the end of fasting can vary slightly among staff.

The decision framework hiring managers should use is a two-step process: draft provisional shift plans from the calendar estimate, then make a final check against the official announcement just before the period. Sharing the estimated fasting dates early inside the company allows them to be reflected in the annual work calendar so they do not collide with peak seasons. Especially on shift-based sites such as manufacturing and food service, knowing the fasting period is one of the criteria for labor management decisions.

Daily Rhythm and Physical Changes for Indonesian Workers During Fasting

During the fasting period, many Indonesian workers take a pre-dawn meal called sahur and break the fast after sunset with buka puasa. Because they take no food or water during the day, when the fasting period overlaps with warmer months closer to summer, fatigue and reduced concentration can appear.

Common on-site questions include “Employees who are fasting tend to feel unwell in the afternoon” and “How should we accommodate break timing?” Fasting is a voluntary act based on personal faith; employers do not need to force employees to eat, nor do they need to cut workloads drastically. At the same time, in industries involving outdoor work or heavy labor, flexible break frequency and hydration timing are effective ways to manage heatstroke risk.

It is also not unusual for many employees to prefer working a normal schedule even while fasting. Reducing duties uniformly as an “accommodation” without checking individual preferences can actually create dissatisfaction. Confirming each employee’s wishes is an important criterion for on-site decisions.

Workplace Accommodations: Shift Adjustments, Meals, and Break Timing

Below are practical measures commonly used for workplace support during the fasting period.

Offer flexible working-hour options, such as moving start and end times earlier or later
Set a short break window right after sunset so employees can take buka puasa (the meal that ends the fast) more easily
If there is a company cafeteria, confirm meal service timing during the fasting period with the individual in advance
On sites with outdoor work or heavy labor, discuss hydration and break frequency individually
Hear leave requests around Lebaran (the major holiday after fasting) early and reflect them in shift plans

These accommodations are not legal obligations, but the Ministry of Health, Labour and Welfare’s foreign worker employment pages repeatedly stress the importance of building workplaces where foreign workers can work comfortably. Religious accommodation is an area more companies are addressing not primarily as legal compliance, but from the standpoint of retention support and preventing turnover.

Points Hiring Managers Often Overlook

When considering hiring or assigning Indonesian talent, there are several points hiring managers often overlook.

First is the misconception that “fasting means they cannot work.” In practice, many employees continue working as usual, and one-size-fits-all accommodation can end up ignoring the individual’s wishes. Second, because fasting dates change every year, reusing last year’s materials as-is can put you out of sync with the actual period. When planning hiring seasons or shifts, you need to check the latest announcement from Indonesia’s Ministry of Religious Affairs each time.

Third is underestimating requests to return home for Lebaran leave. In Indonesia, the post-fasting homecoming (mudik) is highly valued, and the desire to prioritize time with family is similar in feeling to Japan’s Obon or New Year holidays. Confirming at the interview stage when peak seasons and leave preferences are likely to overlap makes it easier to avoid mismatches after joining.

Fourth, do not confuse religious accommodation with the frameworks of statuses of residence such as Specified Skilled Worker or Technical Intern Training. Accommodating fasting is a matter of religious and cultural workplace practice, separate from status of residence requirements or support plans overseen by the Immigration Services Agency of Japan. Mixing the two tends to blur internal explanations and institutional understanding, so caution is needed.

Common On-Site Questions, Failure Patterns, and How to Avoid Them

One common on-site issue is, “We accommodated fasting employees so much that other staff said it was unfair.” This is a typical failure pattern that calls for avoidance measures. Treating religious accommodation as “special treatment” for certain individuals alone tends to create dissatisfaction among other employees. An effective approach is to explain the accommodations during the fasting period to the whole workplace in advance and share the framing that they are “reasonable accommodation for religious reasons.”

Another failure pattern is misidentifying the start and end dates of the fasting period so that peak season and leave requests collide. As a preventive step, when building the annual schedule, check when Indonesia’s Ministry of Religious Affairs announces dates, share provisional dates early inside the company, and establish a process for final confirmation just beforehand.

A further failure is deciding fasting accommodations without confirming with the individual. Well-intentioned reductions in workload can lead to complaints such as “I wanted to work normally.” The remedy is simple: ask the person directly about their preferences and any health concerns during the fasting period. As a decision criterion, this is both the simplest and the most reliable method.

Diagram: Pre-Hiring Confirmation Flow

The confirmation flow when hiring Indonesian talent can be organized as follows. First, review the planned job roles and shift structure and identify any peak seasons likely to overlap with the fasting period. Next, based on announcements from Indonesia’s Ministry of Religious Affairs, reflect the estimated fasting dates for that year in the company calendar. Then, at the interview stage, confirm with the candidate their intention to continue working during fasting and any Lebaran leave preferences. Finally, after joining, communicate regularly with the individual and flexibly revise shifts according to health and workload. Documenting this sequence as a “Diagram: Pre-Hiring Confirmation Flow” in an internal manual enables consistent handling even when staff change.

Companies that also employ talent from other countries, such as Myanmar, may find useful ideas from a different angle on workplace communication with employees of different religious and cultural backgrounds. Reading our article on workplace communication with Myanmar talent as well can help surface common principles of cross-cultural response.

Practical Checklist

Have you confirmed the estimated fasting dates for the year based on announcements from Indonesia’s Ministry of Religious Affairs?
Have you checked in the annual shift plan whether peak season overlaps with the fasting period or Lebaran leave?
Have you individually heard each person’s preferences about continuing work and accommodations while fasting?
Have you explained the fasting-period accommodations to other employees in advance?
On sites with outdoor work or heavy labor, have you reviewed break and hydration timing?
Have you confirmed that you are not mixing status of residence procedures or support plans with religious accommodation issues?

Frequently Asked Questions (FAQ)

How long is the Indonesian fasting period? The fasting month lasts one Hijri month, about 29–30 days. Because it follows the lunar calendar, the Gregorian start and end dates shift each year and are officially announced by Indonesia’s Ministry of Religious Affairs.

Is it acceptable to ask for overtime or night shifts during fasting? It is not prohibited by law, but daytime physical strain is greater while fasting, so it is advisable to confirm the individual’s wishes and assign work within a reasonable range. Rather than a uniform rule, we recommend using individual interviews as the decision criterion.

How much leave do people typically take for Lebaran? It varies by company and individual circumstances, but when travel home is involved, leave requests of several days to about a week can arise. Confirming preferences early and reflecting them in shift adjustments is the practical key.

When hiring Specified Skilled Worker talent, is accommodating fasting a legal obligation under the system? Accommodating fasting itself is not an obligation under the status of residence system. However, under the Specified Skilled Worker system overseen by the Immigration Services Agency of Japan, accepting organizations are required to provide daily-life support, and understanding religious lifestyle practices is positioned as part of that. For details, please check the Immigration Services Agency of Japan’s Specified Skilled Worker system page.

Where should we check information about fasting inside the company? Hello Work and the Ministry of Health, Labour and Welfare’s foreign worker employment pages publish general points to note when accepting foreign workers. For the specific dates of religious observances, official announcements from Indonesia’s Ministry of Religious Affairs are the most reliable source.

Conclusion

Because the Indonesian fasting period shifts every year under the Hijri calendar, it is important not to reuse the previous year’s information as-is. Workplace response during fasting should not be one-size-fits-all; the basic decision criterion is to confirm individual preferences and flexibly adjust shifts and breaks. Points hiring managers often overlook include how highly Lebaran leave is valued and confusion with the status of residence system.

For the overall approach to hiring foreign nationals, including Indonesian talent, our basic article on hiring foreign workers explains the steps in detail. If you are considering highly specialized talent, please also refer to our guide to statuses of residence for highly skilled foreign professionals. If you have concerns about handling the fasting period or hiring operations, feel free to contact us via the Foreign Talent Insights inquiry form. Telephone consultations are also available at 03-6908-6143 (hours: 9:00–18:00).

Where to Check Official Information

Systems, employment management practices, and official announcements by country are updated over time, so also check the following primary sources around the time of publication.

Indonesia’s Ministry of Religious Affairs (Kementerian Agama) — check and cross-reference the latest systems, employment management guidance, and official announcements.

Ministry of Health, Labour and Welfare foreign worker employment page — check and cross-reference the latest systems, employment management guidance, and official announcements.

Immigration Services Agency of Japan Specified Skilled Worker system page — check and cross-reference the latest systems, employment management guidance, and official announcements.