Perceptyx's recently conducted a survey that found links between employers encouraging civic engagement and retention rate. The survey found specifically, that Companies which encouraged employees to vote had a higher percentage of workers who would recommend the company as a good place to work (86% vs. 59%) and had a higher percentage of employees who said they intend to stay at the company for at least the next 12 months (83% vs. 63%). As many employers have made news by discouraging political discussion in the workplace, the survey shows that there are advantages to civic discussion in the workplace to an extent.
See "Positive Connection Between Encouraging Employee Civic Engagement and Retention Rates", Aman Kidwai, HR Dive , October 28, 2020