There's a theory about a person's worth to their organization and how long they can reasonablely be out of touch with it. For instance, I rarely take a week off and have absolutely zero contact with my office. As an example, I was having wine with friends in Paso over Xmas about 7pm, and I get a work related cell phone call x 2. I ignored them (love screening) but I still got them. I got another a few days later and actually took it as I could again see who was calling me.
Soooo, a month off work with presumeably no contact...?