  The SARS-CoV-2 pandemic has transformed the way that the world functions.
Health issues and population safety have driven countries' economies to a
critical state; therefore, sustaining economic activity while keeping workers
safe has become a worldwide goal. In this paper, we present a novel safety
protocol based on rapid antibody testing (ABT). Using discrete event
simulation, we evaluated its performance on the cumulative number of infected
workers, effective reproductive number ($R_e$), and active work force within a
company. Using a synthetic experiment, we showed that ABT twice a week (ABT 3)
performed the best, detecting 5.7% of infected workers, compared to 16.9% when
no ABT was applied. $R_e$ was reduced from 1.75 to 0.84, with a slight decrease
in the active workers within the firm. A sensitivity analysis on the duration
of the shedding period and sensitivity of ABT was performed and led to the same
qualitative conclusions. We applied this protocol in a Chilean winery: the
estimation of the initial $R_e$ of 1.3 was reduced to 0.7 when the ABT 3
protocol was implemented, with a 27% decrease in the number of infected
workers. Although ABT is not approved for COVID-19 diagnosis, our study shows
that upgraded safety standards can already be implemented in workspaces.
