Thank you so much for this great webinar. My best advice would be to echo what was said in the webinar, to have the company culture you want your leaders need to reflect it. If you want employees to take their vacation time, and actually disconnect, then your leaders also need to do this.
Actions speak louder than words. Leadership can have the best intentions and have outlined wonderful expectations for the company culture but if it is not put into practise, it is meaningless. Staff see the example set by leadership as the true expectation. There needs to be consistency in actions from all leadership for it to be seen as reliable and trusted by staff.