Employer request facemask, with facesheild behind plastic placaglass

I do not understand your question. If the employer is mandating that employees wear face shields then everyone must wear a face shield. That would include anyone you come into contact with. The face covering, whatever it is, is to protect other people. When we wear face protection that means that we care about the health and safety of other people. Wearing a face protection device is not necessarily protecting you as much as it almost certainly protects others. Those who do not do so indicate that their fellow citizens or residents mean nothing to them. If the employer refuses to provide the device then how would an employee know that the device they buy will meet the employer's expectations. Smart employers will list makes and models of devices in their employee handbooks. If other employees do not have to do the same you may have a discrimination claim for filing with the New York State Division of Human Rights. Any employee who has reason to believe discrimination may file a complaint. Good luck.