The O*NET (an online resource which has replaced the Dictionary of Occupational Titles) lists job requirements for a variety of jobs and is often considered basic, generic, or initial job analysis data. Everyone can use this database at no cost and is continually updated by observing workers from each occupation. O*NET also has a Career Exploration Tool which is an assessment to help workers and students who are searching for new careers. Data available from O*NET includes physical requirements, educational level, and some mental requirements. Task-based statements describing the work performed are derived from the functional job analysis technique. O*NET also provides links to salary data at the US national, state and city level for each job.