Food Industry Compliance With the Display of Front-of-Package Warning Labels at the Final Phase (2020) of Chile’s Labeling and Advertising Law

<b>Objectives.</b> To investigate food industry compliance with the display of front-of-package warning labels (FOPLs) on products that exceed regulatory thresholds for being high in calories, added sugars, sodium, or saturated fats after full implementation of Chile's Food Labeling and Advertising Law. <b>Methods.</b> In 2020, trained dietitians took pictures of nutritional information and FOPLs on packaged products in supermarkets. We categorized foods and beverages as requiring FOPLs (or not) using their nutritional composition and ingredients as set out in government guidelines. We compared these classifications with the actual display of FOPLs. <b>Results.</b> About 62.5% of packaged foods and beverages displayed any FOPL. The most frequent label was for energy (38.7%), followed by sugars (35.2%), saturated fats (26.2%), and sodium (22.6%). Compliance with FOPL display was high (93.6% for any "high-in" designation). Lower compliance was observed in nonsausage meat products (83.5%) and soups (84.5%). Candies and sweet confectionery and sausages contributed most to noncompliance with any "high-in" designation. <b>Conclusions.</b> Following the law's full implementation, the food industry complied with the display of FOPLs. Mandatory policies with clear guidelines and monitoring systems can contribute to ensuring and sustaining high compliance. (<i>Am J Public Health</i>. 2024;114(12):1398-1405. https://doi.org/10.2105/AJPH.2024.307843).