Hello,

I have a sample from the Current Population Survey (CPS). My data is monthly from 2015-present for the variables empsame, empstat, and labforce. EMPSAME indicates whether or not the respondent was employed by the same employer and the same job he/she reported working as his/her main job in the previous month's survey. What I am trying to do here is to define the "newly employed" as those who responded NO in EMPSAME because this means that they are working for a new employer compared to the previous month.
Once I have the set of "newly employed" in period t, I then want to split it into the ones who were employed in t-1, and those who were not employed in t-1.

I have an identifier variable that gives a unique id for each individual surveyed.

I do not know how I can use the data at hand to achieve the above goal. Any ideas on how to use the identifier to track individuals over each 2 consecutive months to be able to get the 2 sets?