Compressed Work Week Hours Calculator
Use this free compressed work week hours calculator to calculate your daily work hours, total time at work, unpaid breaks, estimated finish time and days off.
What Is a Compressed Work Week?
A compressed work week is a work schedule where an employee completes their normal weekly working hours in fewer days. Instead of working five standard days, the same weekly hours may be distributed across four longer workdays or another compressed schedule.
For example, an employee who normally works 40 hours over five days could complete the same 40 hours by working four 10-hour days.
8 hours × 5 days = 40 hours
Compressed schedule:
10 hours × 4 days = 40 hours
How to Use the Compressed Work Week Hours Calculator
Enter the total number of paid hours you need to work each week and the number of days you want to work. Then enter your unpaid break time and your usual start time.
Click Calculate and the calculator will show your daily paid hours, total daily time at work, estimated finishing time, days off, monthly hours, two-week hours and approximate annual working hours.
Compressed Work Week Formula
The basic calculation used by this calculator is:
If you work 40 paid hours per week across four days:
If you also take a 30-minute unpaid lunch break, your total time at work would be approximately 10 hours and 30 minutes per day.
40 Hour Compressed Work Week Example
Suppose you need to complete 40 paid working hours per week and want to work four days instead of five.
| Weekly Hours | 40 hours |
|---|---|
| Work Days | 4 days |
| Paid Hours Per Day | 10 hours |
| Unpaid Break | 30 minutes |
| Total Time at Work | 10 hours 30 minutes |
| Days Off | 3 days |
If you start work at 8:00 AM, a 10-hour paid shift plus a 30-minute unpaid break would give an estimated finish time of approximately 6:30 PM.
Common Compressed Work Week Schedules
4/10 Work Schedule
A 4/10 schedule normally means working four 10-hour days. An employee working 40 hours per week would therefore complete all weekly hours across four days and have three days without scheduled work.
9/80 Work Schedule
A 9/80 work schedule generally spreads 80 working hours across nine workdays during a two-week period. This often provides an additional day off every second week.
If you use this type of schedule, you can also use the 9 Day Fortnight Calculator to explore a similar two-week working pattern.
4 Day Work Week
A four-day work week can either mean compressing normal full-time hours into four longer days or reducing the total number of weekly hours. Employers may use different definitions, so always check whether your weekly hours remain unchanged.
Does an Unpaid Lunch Break Count as Work Time?
An unpaid break generally does not count toward paid working hours. For example, if you need to complete 10 paid hours and take a 30-minute unpaid lunch break, you may need to remain at work for approximately 10 hours and 30 minutes.
Break rules vary by employer, contract and jurisdiction, so use the calculator for planning purposes and check the rules that apply to your workplace.
Compressed Work Week vs Standard Work Week
A standard 40-hour schedule is commonly spread across five workdays, while a compressed schedule distributes the same hours across fewer days.
| Schedule | Days Worked | Hours Per Day | Weekly Hours |
|---|---|---|---|
| Standard Schedule | 5 | 8 hours | 40 hours |
| Compressed 4/10 | 4 | 10 hours | 40 hours |
Benefits of a Compressed Work Week
A compressed work schedule may reduce the number of commuting days and provide employees with longer periods away from work. Some businesses also use compressed schedules to provide longer daily operating coverage without increasing an employee's total weekly hours.
However, longer shifts may also be more tiring and may not be appropriate for every job. The suitability of a compressed schedule depends on the employee, employer and type of work.
Frequently Asked Questions
How many hours per day is a 40-hour work week over four days?
A 40-hour work week divided across four working days equals 10 paid hours per day.
What is a 4/10 compressed work schedule?
A 4/10 schedule normally means working four days per week for 10 paid hours per day, resulting in 40 total weekly hours.
How many days off do you get with a four-day compressed week?
If you work four days during a seven-day week, you normally have three days without scheduled work.
Can I calculate a 37.5-hour compressed work week?
Yes. Enter 37.5 as your weekly hours and choose the number of working days. The calculator will automatically calculate the required paid hours per day.
Can I calculate a 35-hour compressed work week?
Yes. The calculator works with any positive number of weekly hours, including 35, 37.5, 40 or another schedule.
Does lunch count toward working hours?
Paid breaks may count toward working hours, while unpaid breaks generally do not. Check your employer's rules and applicable employment requirements.
Can compressed work schedules include overtime?
They can. Overtime rules depend on applicable employment rules and employer policies. Longer daily shifts may sometimes affect overtime calculations even if total weekly hours remain unchanged.