Section 6(1) BGStG excludes indirect discrimination where removing the disadvantageous condition would be unlawful or unreasonable because of disproportionate burdens. This calls for a proportionality assessment. It is neither a blanket exemption for the provider nor a requirement for one identical solution in every course.
Section 6(2) lists, among other things, the effort involved, the financial capacity of the party contesting discrimination, public funding, the time since the Act entered into force and the impact of the disadvantage on the protected group. In a ski course, group size, preparation time, available communication tools, course organisation and the safety significance of the information may therefore matter.
If complete removal of the disadvantage would be disproportionate, section 6(3) still requires reasonable measures that produce a material improvement and come as close as possible to equal treatment. This does not create an automatic right to a particular assistant. Suitable alternatives must be examined, such as written or visual safety information, a visible signal and stop system, an individual briefing or another organisational solution.