Acoustic comfort in workplaces such as offices ensures the well-being of workers, improving concentration and productivity. Recent standards such as ISO 22955:2021 and voluntary protocols such as the WELL certification (WELL V2 - Sound) offer guidelines for achieving acoustic comfort through proper room design. Challenges arise especially in environments with architectural constraints during renovation work. Preliminary analysis involves room configuration based on standards, literature, and ultimately, from in situ case studies of existing open-plan offices. The rooms considered are free of furniture, and acoustic treatment is limited to suspended ceilings by ISO 22955:2021. Parameters include assessment of the Lombard effect and the involuntary increase in speaker speech effort in the presence of high ambient noise to ensure acoustic comfort in open plan offices. The study analyzes the synergy between normative standards (ISO) and voluntary protocols (WELL) to identify compatibility when applying both documents.