@david787 said "I have been told and I have read that in Pennsylvania an individual resident needs only to pay PA state income tax on "
'employment income'".
That's not true for the state. Some PA cities (inluding Pittsburgh) have a local earned income tax and/or “Local Services” tax, on wages (sometimes called occupational tax or per capita tax), that may be what you heard of. You do not need to file a Pittsburgh city return, unless you work.
