The ATP is resume candy for the most part, unless you're flying in an operation that requires the ATP. Employers will make tacit recognition of the certification, but won't pay much (if anything extra) because it's not required. It's a little like having a masters degree; some employers may pay something extra if you have it, but most won't, because it's irrelevant to the job.
If it gets them a break on insurance, or makes you stand out just a little more than the next guy applying for the job, it's to your benefit, and there may be some small recognition. It may help the employer advertise that their pilots hold higher qualifications, but by and large, it's not that attractive to most employes who aren't engaged in flying that requires an ATP.