Mitt Romney will pick up the pace of his campaigning this week and stress policy proposals that he believes would put more Americans back to work, such as cracking down on Chinese trade practices, pursuing more free-trade agreements and increasing domestic oil and gas production.

The approach, which focuses on the practical implications of Mr. Romney's policies, comes as other Republicans are urging the GOP presidential nominee to take the fight more assertively to President Barack Obama and be more specific about his plans...