Genesis Alkali is calling some of its workers back following layoffs at its mine this summer.

David Caplan, the company’s communications director, described the number of people being called back as “modest,” but said the market outlook going into 2021 has the company feeling confident about bringing more employees back.

Caplan said one of the main reasons the company is calling workers back is that many of its older workers, some of whom have worked for more than 40 years at the facility, are looking at retiring. Caplan said as those people retire, the company plans to call back mor...