An Industry Settlement Agreement (ISA) is a legal agreement between OSHA and one or more industry groups, typically reached after an industry legally challenges a new or revised OSHA health or safety standard. The ISA may be posted as a notice in the Federal Register, amended to an OSHA standard, attached to an OSHA compliance instruction, issued by memorandum to OSHA's field offices, or otherwise maintained by the Labor Department's Office of the Solicitor. Listed below are notable ISAs grouped by the applicable OSHA standard(s).