How long does the plan cover? July 29, 2021 16:05 The initial period of the plan cannot exceed 26 weeks. Only the employer may extend the plan for an additional 26 weeks. Related articles Will temporary total disability (TTD) or temporary partial disability (TPD) benefits continue to be paid? What is the maximum number of weeks allowed for this benefit? What does it cost? How are injured employees identified? Do I need to file a First Report of Injury on an Incident only case?