ISO/TS 20646-1:2004 provides information and guidelines to properly utilise various ergonomics standards concerning the factors related to local muscular workload (LMWL), and helps develop activities to reduce LMWL in workplaces, in an effective and efficient manner. ISO/TS 20646-1:2004 is intended primarily for employers, ergonomics and occupational health-related staff in enterprises, and workers. Specific measures to reduce LMWL can be applied to non-professional activities. Although ISO/TS 20646-1:2004 provides ideas of effective and efficient measures to reduce LMWL, it does not certify the complete prevention of health problems caused by LMWL.