The traditional view is indeed that we shouldn't legislate things happening in other countries. As an example for what is going on though, we're set to have a vote on the Responsible Business Initiative[0] under which "companies will be legally obliged to incorporate respect for human rights and the environment in all their business activities [...] abroad".

While initiatives usually fail the popular vote, it is not so certain for this one. It has very broad support. All parties have to argue their position regarding initiatives that will get voted on. So yes certainly there is a debate on such issues.

[0] https://corporatejustice.ch/about-the-initiative/