PT - JOURNAL ARTICLE AU - Siripongvutikorn, Yanakawee AU - Tabuchi, Takahiro AU - Okawa, Sumiyo TI - Workplace smoke-free policies that allow heated tobacco products and electronic cigarettes use are associated with use of both these products and conventional tobacco smoking: the 2018 JASTIS study AID - 10.1136/tobaccocontrol-2019-055465 DP - 2021 Mar 01 TA - Tobacco Control PG - 147--154 VI - 30 IP - 2 4099 - http://tobaccocontrol.bmj.com/content/30/2/147.short 4100 - http://tobaccocontrol.bmj.com/content/30/2/147.full SO - Tob Control2021 Mar 01; 30 AB - Objectives Heated tobacco products (HTPs) and electronic cigarettes (e-cigarettes) are rapidly gaining popularity, especially in Japan. However, at the time of the survey (2018), there was no national legislation banning HTPs or e-cigarette use in the workplace. The objective is to examine the current situation for workplace smoke-free policies which ban the use of HTPs/e-cigarettes and the associations of such rules with the use of HTP and e-cigarette as well as conventional cigarette smoking.Methods An internet-based self-reported questionnaire survey was conducted in 2018 as a part of the Japan Society and New Tobacco Internet Survey study. 5646 eligible employees aged 15–72 years were analysed. Proportions and adjusted rate ratios for HTP and e-cigarette use were calculated according to covariates, using Poisson regression models. Those who reported HTP or e-cigarette use within 30 days were defined as current user of the products.Results In workplaces which prohibited smoking indoors but permitted the use of HTPs/e-cigarettes, the rate ratios of HTP use was 2.19 (95% CI 1.57 to 3.06), e-cigarette use was 3.86 (95% CI 1.97 to 7.57) and combustible cigarette use was 1.67 (95% CI 1.19 to 2.34) when using workplaces which also prohibited HTPs/e-cigarettes as a reference category.Conclusions Workplaces that allow HTP/e-cigarette use indoors were associated with higher rate for HTP and e-cigarette users, and for combustible cigarette smokers. National legislation banning tobacco should be enforced and also cover HTPs and e-cigarettes in order to avoid renormalisation of smoking and nicotine addiction.