Calculating number of sick days in a rolling year

Hi I would welcome any guidance you could give me about calculating the number of days in a rolling year.

The items below are my column headings

First Day of Absence/Last Day of Absence/number of days off/number of sick days within a 12 month period/number of sick periods in 12 month period

Example data

Column A First day = 13/08/2013
Column B Last Day = 20/08/2013
Column C Number of days off - I have used =NETWORKDAYS(a2,c2)

Column D No of sick days within 12 months - This is where I need help I need a formula that will look at the Date in column B and then calculate how many days have been taken in the previous 12 months

Column E No Sick periods - Again how do I calculate the amount of times opposed to days that someone has been off.

Any help would be greatly appreciated

Thank you

Hi, have a look at the simple example attached.

SICK DAYS.xlsx

Thank you for your help, but as soon as I enter a date which would be excluded within the 12 month period it still adds the days on rather than excluding days outside of the 12 month range. Not sure what to do next

OK I've been working on another that excludes days older than 360 days - not perfect but getting closer

SICK DAYS.xlsx

Try this: Sick Days.xlsx

@OllyXLS - very cool, however the formula in col D "Number of sick days in the past 12 months" doesn't work ... sorry. In A2 in put 3/07/2012 and in B2 6/07/2012 and it still counted these days within the "last 12 months", so let's keep working on this but I do like your spreadsheet.

Originally Posted by Ursul

@OllyXLS - very cool, however the formula in col D "Number of sick days in the past 12 months" doesn't work ... sorry. In A2 in put 3/07/2012 and in B2 6/07/2012 and it still counted these days within the "last 12 months", so let's keep working on this but I do like your spreadsheet.

I should have explained my interpretation of the requirement: for each row, my worksheet calculates the number of sick days / sick periods in the 12 months preceding the end date of this row's sick period. It also relies on keeping the sick periods sorted in ascending date order.

If you simply want to calculate these for the 12 months preceding today, then simple sumif / countif functions will work, assuming columns A:C remain as defined:

Number of sick days; =SUMIF($B:$B,">="&TODAY()-365,$C:$C)
Number of sick periods: =COUNTIF($B:$B,">="&TODAY()-365)

I have made some adjustments to your spreadsheet and now it seems to work and not count anything older than 1 year.

SICK DAYS01.xlsx

Wow - thank you so much, this forum is great!

Looking at how the formula works, I have now decided to only have the rolling information in one place above the table and it will make the collating of data from each sheet far easier.

I have then used =COUNTIF(B13:B99,">"&C7-365) to calculate the number of sick episodes in one year.

Sheet is very scruffy but have attached so you can see

Well done Nikkie - if you are happy please mark the Thread as Solved - go to your first post top-right click on Thread Tools and mark Solved. If I have helped please click on "Add Reputation" (bottom-left) of my post.

Cheers

Can you help me figure out hw to modify your file "Book1.xlsx" to calculate sick days in rolling 6 month time frame?

Hi,

A very interesting thread, and thanks to nikkie456 for starting it and all the answers. I think there's still a problem with these and I wonder if someone can help correcting this, or me if I've misunderstood.

I'm not using the NETWORKDAYS because I'm interested in overall days, so I'm replacing that with =B2-A2 (EndDate-StartDate), but I think the problem is the same. Here are two scenarios where I think the calculation isn't coming out correctly.

Start	]End	Count	Count365	Expected365
01/08/2015	10/10/2015	70	70	70
01/09/2016	01/10/2016	30	100	69

The problem in the example above is that the entire period of the earlier date is counted, not just the part of that period that's within 365 days of the end of the second period.

Start	End	Count	Count365	Expected365
01/0/2015	30/09/2015	29	29	29
10/09/2016	01/10/2016	21	21	50

The problem with this example is that none of the first period is counted, but only the first nine days should be omitted.

Can anyone help with correcting these issues - I'm sure it will affect the working week version in the same way.

Thanks

Oh? Sorry, I thought this was a continuation of the original question - the answer isn't complete. My question is the same as the original question, it's not a new question?