I work for a manufacturing firm with a development team of 2. We've created real-time apps that are now an integral part of the process, a process that runs 24x7. Technical support for the process has been provided in an informal way. The dev team members have been given a company phone and support calls go through to whoever answers first, no guarantees though.
After an incident where no support could be provided because both of the team members were unavailable the company wants to introduce a more formal agreement. Basically support will be rotated, 1 week on, 1 week off. The employees will be paid to be on support, receive a call fee for any calls and receive a call out fee if required to go into work to fix the problem.
My question is this: What is a reasonable amount of pay to expect in return for this level of service? As a percentage of salary or as a dollar value, please specify US, AUD, etc.
Also, is anyone else in this situation and if so what are you doing/what are your experiences?