The Work Ability score (WAS) consists in the worker’s self-assessment of his/her current ability compared to the lifetime best. It ranges from 0 to 10. The designers of the method 
((Gould R, Ilmarinen J, Järvisalo J: Dimensions of work ability. Results from the Health 2000 Survey. Helsinki (Finland): Finnish Centre for Pensions; 2008. p. 25–34. Occup Environ Health. 2008, 81: 495-501. 10.1007/s00420-007-0222-z.))
suggested the same type of categorization as for WAI, namely: poor (0–5 points), moderate [6, 7], good [8, 9], excellent [9]