To see all the active infotypes for an employee without going into each infotype individually, use this transaction:...
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S_AHR_61015471 or follow this menu path: Human Resources > Personnel Management > Administration > Info System > Reports > Administration Taiwan > Infotype overview for employees OR execute this program: HTWLINF0 (that's a zero on the end, not an "O")
I know it says "Taiwan" but we use this for every country we have implemented and it's the fastest way to check an employees infotypes to get information. Sure helps to see it all in one place!
Caution though: one thing I have also found out, if you give this info to a user and they do not have security to view one of the infotypes, it will not show up on the output for that employee, even though they have it.