I have recently signed and accepted an offer of employment from another company that I applied for a role in. When I informed my current company of my intended resignation, they counter-offered with a guaranteed promotion in the next round, including more opportunities related to the role that I want to pursue (this was done through a mobile call, without anything written down). What do you think should be the better move?
For context, this is in Australia - will there be any legal implications if I renege on an offer I signed? How likely will it be for the other company to pursue charges against me, and if there is a possibility that my current employer can take this against me and treat me unjustly if I do accept their counter offer, is there anything I can do given that it was only a verbal counter offer?