VOL.304,NO.67Suggestedretailprice$3.50Tuesday:Warmandsunny.High82-87,low70-75.Wednesday:SeeTuesday.High83-88,low71-76.Sunrise:6:13.Sunset:7:12.Weatherandcomics,D4-5.Obituaries,C9.Good‘nplentyLaborDayandunionswerecelebratedacrossthenation.InPhiladelphia,PresidentBidenlaudedtheriseinjobcreationataunionevent.A2.InBoston,optimismpervad-edtheannualLaborDayBreakfastandrally.B1.MayorMichelleWuandthecity’sfirefightersunionagreedonatentativecontractfollow-ingmonthsofacrimoniousnegotiations,butdetailswerelimited.B1.ERINCLARK/GLOBESTAFFPresidentialcandidateVivekRamaswamygreetedClaireDesjardinsatRobie’sCountryStoreinHooksett,N.H.,onSaturday.ByNikiGriswoldGLOBESTAF...