Plumbers do not typically install shower pans as this is a task that can be easily completed by a DIYer. However, plumbers may be able to provide advice on how to install a shower pan or may be able to refer you to someone who can assist with this task.

There is no definitive answer to this question as it depends on the particular plumbing contractor's expertise and specialization. Some plumbers may install shower pans while others may not, so it's best to inquire beforehand to ensure that the contractor you hire is qualified and experienced in this specific task. Hope that helps!