When can the employer request a second opinion under Labor Code 4062(b)?

The employer can request a second opinion under Labor Code 4062(b) specifically when there is a dispute about the need for spinal surgery. This provision allows employers to seek an independent evaluation to address the specifics of the treatment plan when there is uncertainty or disagreement regarding the necessity of a surgical procedure.

This framework serves to ensure that decisions regarding medical interventions, especially significant ones like spinal surgery, are backed by appropriate medical evidence and consideration. It is a critical aspect of ensuring that injured workers receive appropriate care while also protecting the employer's interests in terms of medical costs and treatment efficacy.

In contrast, while employees claim injuries, express dissatisfaction with treatment, or concerns regarding compensation amounts, these scenarios do not inherently involve the specific legal framework for requesting a second opinion regarding surgical procedures as established under Labor Code 4062(b). Thus, the focused context of disputes related to spinal surgery is what makes option A the correct choice.