PT. PHE ONWJ as one of the national oil and gas mining corporate has changed the work cycle for offshore workers from 12:12 (12 working days and 12 days off) to 21:21 during the COVID-19 pandemic era. The enactment of the extended days to the point of surpassing 21 working days due to the workers who are unable to work, increasing the workload for offshore workers.  To identify the state of physical health of the workers, blood pressure measurements are taken every week for the on-duty workers. The record of the blood pressure performed by on-site doctors showed that the average worker with a 21-days on duty and an extended day is still in the normal range, which is below 120mmHg/80mmHg.  The NASA TLX test was performed to identify the level of the workload of offshore workers. Out of the 142 respondents in the PHE ONWJ offshore working area, 51% of workers have experienced an extended day. The results of the NASA TLX questionnaire show that offshore workers at 21:21 have an average WWL of 80.68 (high) and workers with an extended day of 84.79 (very high). Therefore, an analysis is needed to determine the optimal work cycle during the COVID-19 pandemic. Analysis of work cycle alternatives using the AHP - Expertise Judgment method with 4 criteria: mental workload, operational-accommodation costs, health protocol, and operational protocols in the field with 4 alternatives such as 12:12, 14:14, 18:18, and 21:21 by 7 experts. The results acquired that the 12:12 cycle became an alternative with a dominant weight of 0.394 or 39.4% and the 14:14 cycle becomes the second alternative with a weight of 0.24 or 24%.

Keywords
COVID-19, Extended Day, NASA TLX, W W L , A H P - E x p e r t i s e J u d g e m e n t