Table 1.

The dimensions, descriptions and risk categories of the COVID-19-JEM: four determinants of transmission risk, two mitigation measures, and two factors related to precarious work.

COVID-19-JEM		Risk score
Dimension	Description	No risk (score=0)	Low risk (score=1)	Elevated risk (score=2)	High risk (score=3)
Transmission risk
Number	The number of workers in close vicinity of each other	Homeworkers, or not working with others	<10 per day	10–30 per day	>30 per day
Nature of contacts	The nature of contacts with co-workers, general public or patients with COVID-19	Homeworkers, or not working with others	Working in workspaces with co-workers only	Working in workspaces with general public	Working in workspaces with regular contacts with suspected or diagnosed COVID-19 patients
Contaminated workspaces	The risk through contaminated work surfaces and materials	Homeworkers, or not working with others	Frequently sharing materials/surfaces with co-workers (≥10 times a day)	Sometimes sharing materials/surfaces with general public (<10 times a day)	Frequently sharing materials/surfaces with general public (≥10 times a day)
Location	Indoors or outdoors	Homeworkers, or not working with others	Mostly working outside	Working partly inside (1–4 hours/day)	Working mostly inside (>4 hours/day)
Mitigation factors
Social distancing	The possibility to keep ≥1m of social distance	Homeworkers, or not working with others	Social distancing can always be maintained	Social distancing cannot always be maintained	Social distancing can never be maintained
Face covering	The need and usage face covering	Homeworkers, or not working with others	Wearing face covering at the worksite	Wearing face covering during specific activities, but not always while in proximity of others	Activities in proximity of others which cannot be done when wearing face covering (eg, sports, singing)
Precarious work
Income insecurity	Proportion of income insecurity due to the pandemic	<1%	1–10%	11–25%	>25%
Migrants	Proportion of labor migrants	<1%	1–10%	11–25%	>25%