Sentence:  Among them , according to the U. S. Department of Commerce , are : ( 1 ) shorter work weeks , ( 2 ) higher pay , ( 3 ) longer paid vacations , ( 4 ) better transportation , ( 5 ) <WSD>earlier</WSD> retirement , and ( 6 ) more education . 
Meaning of the word marked with <WSD> tags:  being or occurring at an early stage of development