The Massachusetts Fair Employment Practices Act prohibits employment practices that discriminate on the basis of certain classifications, including disability (MA Gen. Laws Ch. 151B Sec. 1et seq.). According to guidelines issued by the state Commission Against Discrimination, alcoholism and drug addiction (but not recreational use) are considered disabilities. However, current illegal use of controlled substances is not covered. The Act covers employers with six or more employees.
Reasonable accommodation. Employers are required to provide reasonable accommodation to covered individuals. This does not mean employers have to tolerate abuse on the job; it may mean altering schedules to allow for participation in therapy programs, etc.