I think it's more like the stress in the workplace (for example) is caused by two things. Greedy or power hungry people deliberately harming others (for example

I think it's more like the stress in the workplace (for example) is caused by two things. Greedy or power hungry people deliberately harming others (for example) and then other people over reacting to this but also to just the normal shit you have to deal with anyway. So the mindfulness is to deal with the over reaction but ethics and morality are needed to deal with the action. You need both, seems to be the criticism that some people are making about having mindfulness without some ethical framework like Buddhism.