There is no rescue mechanic, which Chris Roberts has more or less stated in 10 Questions video.
The thing about claiming something was 'more or less stated' is that it's up for interpretation. Claiming there is no rescue mechanic is absolutely, 100%, not true. It's actually already in the game in part, with full implementation once they build the in game comms (voice chat).
Instead, if your floating about in space, you just press escape and you respawn to your last friendly docked position.
What was "More or less stated" was that in a populated system, hitting esc or something will activate the local search and rescue and you will, after a short time, respawn at your last safe space port. HOWEVER, if you eject in less civilized space, aka lawless space, where there may not be any local S&R, it will cost you a "life" and you may respawn at a hospital instead. There is no S&R service such as this that a player can join as a job option and get paid for it. At least officially.
This, of course, does not factor in player ships with tractor equipment and large cargo bays where one could 'rescue' an ejection pod. That is, after all, the primary selling point of the Cutlass for those that intend on using it for things other then piracy. There is also the fact that spacewalking is possible and is a part of Arena Commander already and any ship can pick up a person floating in space, especially an ejected pilot. (So long as they have a suit capable of spacewalking.)