Leave is the opposite of Stay. Stay is a synonym of Delay. 
Employment is the opposite of Unemployment. Unemployment is the opposite of Job. Job is related to Benefit. Benefit is a synonym of Assistance. 
Leave <--Antonym--> Stay <--Synonym--> Delay 
Employment <--Antonym--> Unemployment <--Antonym--> Job <--RelatedTo--> Benefit <--Synonym--> Assistance 