Yes, businesses can pay their employees weekly with ADP’s HR outsourcing service. ADP allows businesses to provide employees between 12 and 52 paychecks per year. The exact number of paychecks will depend on your specific business and state requirements. Standard pay schedules include weekly (52 paychecks per year), biweekly (26 or 27 paychecks per year), and semi-monthly (24 paychecks per year).