Todays economy requires that peoples budgets be rigid. Only todays and peoples are followed by nouns. Today's . . . People's . . . Not all sentences contain possessives.
Some sentences contain more than one possessive.
Judiths hair is thick and curly. My legs have been hurting me. The houses front porch is sagging. Eugenes sense of humor always saves the day. The class liked Mrs. Smiths suggestions.