Hello -

I need help developing a formula for conditional sum - adding total
years of service for employees.

So, where my columns are A ID, B Employer, C Start Date, D End Date, E
Years at Job, I want to sum the years at job for each employee ID. Can
anyone help me with a formula to do that?

Thanks!


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johnnygirl51
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Try the following undocumented formula:-

=DATEDIF(C1,D1,"Y")

where C1 is the Start date cell, D1 is the End date cell and Y is the
date diffrence in years


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Gary Brown
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Hi Gary -

Thanks so much for responding. I'm not familiar with the DATEDIF
formula. I could be missing something or misreading something, but I'm
not sure that will get me where I need to be.

If my data looks like this:

ID Employer Start Date End Date Years

0000001 Employer B 1998-10-01 2000-07-01 1.8
0000001 Employer C 1998-05-01 1998-08-01 0.3
0000002 Employer D 2000-02-01 2001-03-15 1.1
0000002 Employer E 1999-06-01 2000-01-01 0.6
0000003 Employer F 1998-06-01 1998-08-31 0.2
0000003 Employer G 1996-12-01 1998-05-31 1.5
0000004 Employer H 1998-03-30 1999-12-29 1.8

I want to be able to write a formula that will add 1.8 and 0.3 for
Employee 0000001 and then add 1.1 and 0.6 for Employee 0000002, so that
I can get a total number of years of previous experience for each
employee. I apologize if I'm missing something and appreciate your
patience and help on this!!!!!!


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johnnygirl51
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The formula is the same, except you replace the Y with an M for months
divide this by 12, therfore the formula looks like the following:-

=DATEDIF(C1,D1,"M")/12

This will then give you as per your example:-

0000001 Employer B 1998-10-01 2000-07-01 1.75
0000001 Employer C 1998-05-01 1998-08-01 0.25
0000002 Employer D 2000-02-01 2001-03-15 1.08
0000002 Employer E 1999-06-01 2000-01-01 0.58
0000003 Employer F 1998-06-01 1998-08-31 0.17
0000003 Employer G 1996-12-01 1998-05-31 1.42
0000004 Employer H 1998-03-30 1999-12-29 1.67

Then you can either do a pivot table to get the totals for employee
0000001, 0000002 etc or you could have a table with the following
formulas

A B
1 0000001 =sumif(employee ids - table above,A1,datedif
calculation)
2 0000002 =sumif(employee ids - table above,A1,datedif
calculation)
3 0000003 =sumif(employee ids - table above,A1,datedif
calculation)
4 0000004 =sumif(employee ids - table above,A1,datedif
calculation)

I have enclosed a smaple zipped up spreadsheet for you to have a look
at


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