# Annual occupational structure **URL:** \ **Category:** CPS\ **Created:** [March 4, 2019, 7:59pm UTC](https://forum.ipums.org/t/annual-occupational-structure/2839 "2019-03-04T19:59:36Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Ayorinde\_Ogunyiola](https://avatars.discourse-cdn.com/v4/letter/a/dbc845/32.png) [@Ayorinde\_Ogunyiola](https://forum.ipums.org/u/Ayorinde_Ogunyiola)\ **Post date:** [March 4, 2019, 7:59pm UTC](https://forum.ipums.org/t/annual-occupational-structure/2839/1 "2019-03-04T19:59:36Z")
Hello I am tried to get historical data on annual basis for major occupational group to analyze change in occupational structure. ---
**Author:** ![JeffBloem](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.ipums.org/jeffbloem/32/40_2.png) [@JeffBloem](https://forum.ipums.org/u/JeffBloem)\ **Post date:** [March 4, 2019, 9:04pm UTC](https://forum.ipums.org/t/annual-occupational-structure/2839/2 "2019-03-04T21:04:51Z")
In general you can find this information from two separate data sources. The [IPUMS USA](https://usa.ipums.org/usa/) project provides access to public use microdata from the US Census and American Community Survey. These data go back to 1850, but before 2000 are only available every ten years. The [IPUMS CPS](https://cps.ipums.org/cps/index.shtml) project provides access to public use microdata from the Current Population Survey. These data go back to 1962 and are available on an annual basis. In both cases, you’ll like want to use one of the harmonized occupation variables. These variables are called [OCC2010](https://cps.ipums.org/cps-action/variables/OCC2010#codes_section), [OCC1990](https://cps.ipums.org/cps-action/variables/OCC1990#codes_section), or [OCC1950](https://cps.ipums.org/cps-action/variables/OCC1950#codes_section) in both IPUMS USA and IPUMS CPS. ---
**Author:** ![Ayorinde\_Ogunyiola](https://avatars.discourse-cdn.com/v4/letter/a/dbc845/32.png) [@Ayorinde\_Ogunyiola](https://forum.ipums.org/u/Ayorinde_Ogunyiola)\ **Post date:** [March 4, 2019, 9:45pm UTC](https://forum.ipums.org/t/annual-occupational-structure/2839/3 "2019-03-04T21:45:47Z")
Thanks @JeffBloem