If she works for the same employer, ALL her jobs are considered together for overtime purposes: employers may not avoid paying overtime by splitting work up among different positions. So if he is paid hourly (not an annual salary) and is eligible for overtime, they need to pay her overtime whenever her total hours exceed 40 hours per week.She may or may not have to get the same benefits as full time employees: employers do not have to provide the same benefits to all employees, so if her two part-time positions involve different work or functions than the employees who get benefits, the employer may be able to make those non-benefit positions.