Don’t let legislation lead
/Unless you’ve been hiding under a rock, you’ll know that WHS legislation has recently changed in Australia to include psychosocial hazards. Organisations now have a legislated responsibility to ensure that people are safe from undue psychological impacts of work. As of this week, there's been additions to enshrine people’s right to disconnect from work, meaning they cant be compelled to respond to out of hours communication unless it is unreasonable (e.g. when you are on call, or under a specific set of conditions for a limited time)
You could take the approach of finding out what the new rules are and then follow the legislative lead. That will take you down a rabbit hole of minimum standards and a compliance mindset. A better approach is to build the culture you and your team want/need for optimal performance and then create it together. The standard you set will be much greater than the minimum required, and will have the added bonus of boosting engagement and performance.