The Government here has been re-organizing and changing all of their web pages lately and some types of information seem to be disappearing.
The policy on accommodating people with MCS/ES is no longer available on the website. This is what used to be there (2007-2013):
Policy on Environmental Sensitivities
This policy is issued to encourage employers and service providers to proactively address issues of accommodation for persons with environmental sensitivities.
Policy on Environmental Sensitivities
Individuals with environmental sensitivities experience a variety of adverse reactions to environmental agents at concentrations well below those that might affect the “average person”. This medical condition is a disability and those living with environmental sensitivities are entitled to the protection of the Canadian Human Rights Act, which prohibits discrimination on the basis of disability. The Canadian Human Rights Commission will receive any inquiry and process any complaint from any person who believes that he or she has been discriminated against because of an environmental sensitivity. Like others with a disability, those with environmental sensitivities are required by law to be accommodated.
Seriously "Sensitive" to Pollution 