I'm a software developer, and I am currently negotiating a contract with a new employer. If everything works out as planned, I will need to resign from my current job before the end of the month.
The notice period is "Current month plus one month", meaning that in order to have as short notice as possible, I need to resign before the 1st of next month.
The issue is that both my manager and the CEO is on vacation the last half of the month, and thus not in the office. While it is likely they read their emails while on vacation, I can't assume they do, and definitely can't assume they'd send me a confirmation email back.
What's the best way to handle my resignation? I need it to be legally registered that I resigned in this month, not any time in the next month, since that would extend the notice period by a full month, and I can't have that. My initial plan was to hand in my resignation on paper, and have my manager sign a copy as proof I resigned in due time before the 1st of next month.
We're a small company (<15 people) so there is no HR department. Usually everything related to hiring and firing is handled by my manager and/or the CEO.