Inclusion Criteria:  Diagnosed with MS (Mc Donald's criteria), Expanded Disability Status Scale ≤3.5 (no disability-fully ambulatory with moderate disability), ≥18 years, being employed. By these criteria the study will include individuals most accessible for the intervention and who have the best prospects to maintain/improve balance, walking, physical activity and participation in employment.  Exclusion Criteria:  Retired, pregnancy at enrolment, exacerbation within two weeks prior to enrolment and other serious conditions compromising balance, walking or work capacity.