According to the text, maids and housekeepers in commercial facilities typically work full-time and may need a post-secondary certificate or have other qualifications. They are responsible for maintaining cleanliness and hygiene standards, often using cleaning equipment throughout the day. Housemaids may also have certificates of employment to demonstrate their skills and job well done. Those who want to work in the US must have a US medical license, which includes passing exams and finding employment. Housekeepers often work in lodging environments. It is important for domestic workers to have a work certificate and provide documentary proof of eligibility to work. Employers seek evidence of skills and results when considering candidates for housekeeper positions.