1. Eurostat Workshop on ISCO - 22 November 2011
Correspondence table between ISCO 88 and ISCO 08 using additional variables
Eurostat Workshop on ISCO - 22 November 2011
12/10/2011

2. The needs To code former years of LFS and other surveys in ISCO 08 :
- give the possibility to produce historical series
-  urgent need for ESEG-ESSnet : allow data analysis with ISCO08 with sufficient accuracy, so as to be able to choose the best ESEG prototype ;
- working on european formatted files, using the same methodology, but with few variables
- or every country for himself, using as much information as possible
NB : du fait de l’EDP, un peu plus d’un quart des BI dans les PC (près de 30%)
Correspondence table between ISCO 88 and ISCO 08 using additional variables
22/11/2011

3. Correspondence tables : the state of the art
There is a theoretical “Correspondence table between ISCO 88 and ISCO 08”
It describes all the possible combinations of ISCO 88 -4d and ISCO 08 -4d.
No rule for decision
Correspondence table between ISCO 88 and ISCO 08 using additional variables
22/11/2011

4. Some proper ways to code former years in ISCO 08
- Independent double-coding for the same individual, working with individual basic informations and using national coding programs. But problems :
o basic information is not necessarily available
o coding programs might fail to code all situations. Eg France : SICORE fails in 20% cases  coded by an operator
- or : elaborate a Correspondence table ISCO 88  ISCO 08 using additionnal variables
Correspondence table between ISCO 88 and ISCO 08 using additional variables
22/11/2011

5. Correspondence table between ISCO 88 and ISCO 08 using additionnal variables
Input :
- ISCO88-3d :
o european required level
o No satisfactory accuracy of national files at 4-digits level
- core variables :
o       job status : employee / self-employed
o       firm NACE activity : section level (NACE 1d)
- non core variables
o firm size (in LFS database) : 9 employees or less / 10 or more
o ISCO-08 supposed required skill - level for the occupation
Ouput : ISCO08-2d
Correspondence table between ISCO 88 and ISCO 08 using additional variables
22/11/2011

6. ISCO-08 Supposed required skill - level for the occupation
§        1 - primary
§        2 - secondary
§        3 - tertiary education 1
§        4 - tertiary education 2
eg Question in all French surveys
·        specialised worker
·        (highly)-qualified worker
·        employee
·        technician / associate professionnal
·        manager / professionnal
·        managing director
·        differents grades of civil servants
Correspondence table between ISCO 88 and ISCO 08 using additional variables
22/11/2011

7. Analysis of the Correspondence table
- if the variable is not available : the table points to the most likely ISCO 08
- examples where no auxiliary variable is necessary
- NACE 1-d does not solve all problems :
Eg : tertiary support departments inside the firm (different from tertiary ouput activities of firms)
Correspondence table between ISCO 88 and ISCO 08 using additional variables
22/11/2011

8. Further developments - first prototype by the end of november
- Validation early december
- France :
. national professional classification : PCS
. French LFS 2010 has been coded in ISCO 88 and ISCO 08, with independent methods using PCS and additionnal variables,
- other independent double-coded national LFS ?  other cross-validation of the Correspondence table ?
- if not, compare 2009 and 2011 structures
Need for a Correspondence table ISCO 88 -2d  ISCO 08 -2d ?
Correspondence table between ISCO 88 and ISCO 08 using additional variables
22/11/2011

9. Thank you
Correspondence table between ISCO 88 and ISCO 08 using additional variables
22/11/2011