Unless otherwise specified, applicable laws for purposes of this subchapter shall be determined as follows:

1. (1) Employers in this Commonwealth shall be in compliance with applicable Pennsylvania law and Federal law.
2. (2) Employers based in other states in the United States shall be in compliance with applicable laws of their states and Federal law.
3. (3) For employers whose locations for manufacture or assembly are outside the United States, those employers shall be in compliance with applicable laws of countries where the facilities are located.