At that time, just when internet was beginning to take off, I was completely unaware of any sort of specific guidelines for ESL Professionals. Much has changed since that time, prompted no doubt by problems that many instructors in the field created or were a part of. Unfortunately, I don't believe many countries that employ foreign English instructors regulate their employees nearly enough, to protect students or fellow teachers, and stronger regulations and ethical guidelines need to be put in place for any Canadian going overseas. Regardless, ESL instructors can be regulated here in Canada and great strides have been made over the years to do just that.
While recently researching ethical guidelines for teaching English as a second language, I came across TESL Canada's site, where they have listed their guidelines for Canadian teachers. Appropriately, it is not only a guideline on how instructors need manage themselves in relation to the students, but also to colleagues and the profession itself. Although it states that these guidelines are to assist practitioners and to establish a standard of professional conduct within Canada, I think it is imperative that these guidelines be taken into any classroom that a Canadian English instructor enters, and that the guidelines stated are strictly adhered to within any classroom instructed by a Canadian regardless of the country in which they are employed.
For extra reading, I have included a few links of English Instructors behaving badly.
The Great Pretenders
Worked hard, Liked to party
Photo Source: https://pixabay.com/en/board-school-blackboard-chalk-font-64269/