I read over what was posted by Goosegg. My son, while employed by his drafting team had 3 surgical procedures, two of which not performed by the team doctor. The doctor that performed the two, agreed in advance to accept what workers compensation would allow, my son was responsible for his own transportation to that doctor in NYC, while not to the team doctor in STL. Two procedures were done in the off season. He also was allowed second opinions.
One thing that I have learned, once a pitcher throws a ball off of a mound, a player takes an at bat (after recovering from any time on the DL), the team is responsible from that day forward, so in many cases after the doctor declares the player ready to play and recovered (no more complaints from the player), players can be released. You would most likely need the services of a compensation attorney to prove whether your injury is worth a settlement or further care. Let the buyer beware. Of course this applies to milb players.
As far as unemployment compensation discussed earlier, if a player is released or is not offered another contract, he is allowed unemployment from the state he resides. Players in the off season under contract, as stated cannot receive compensation for off season.
Getting back to injuries, due to the nature of the business, many players hide their injuries, as they know this will lead to the DL and also may lead to losing their job. If the player does not declare their injury, they will never have an recourse for any action against the team. I can see in some way why the bigger entity (MLB) here might need to protect themselves for later claims.
Sons rehab, all three procedures were done at the spring facility (as in most cases for most teams) and in off season, his room was paid for as well as meals everyday. The stipulation was that he would not be reimbursed for gas or tolls, etc. if he decided to live at home, which was 45 minutes away. Even as a 40 man rostered player, they stood their ground on this issue, and IMO when his agent stepped in, this did cause some rift between player and management.
Bottom line is that they do like to do things their way, and they usually get it.
I would like to see infielddad's take on the link posted, I hope that he checks in.