Unfortunately, U.S. employment laws are not equipped to deal with the day-to-day mental strains placed on retail workers. Workers compensation laws generally do not compensate purely mental injuries. Workplace bullying or harassment is only legally actionable if the harassment is severe or pervasive and motivated by an unlawful factor like race, religion, nationality, sex, disability, etc.
Assuming you do not have an employment contract, you can only claim wrongful termination if the firing was motivated by certain unlawful reasons. Unlawful reasons include discrimination based on sex or gender – this includes sexual harassment and pregnancy – as well as race, religion, nationality and disability. In certain places and in certain situations, sexual orientation discrimination can also be unlawful. Disability in this context will often mean any serious or chronic health condition you have. Disability discrimination can also mean that you are taking care of someone with a disability.
You also cannot be discriminated against by your employer for certain activities on the job. This is commonly referred to as retaliation. One of these activities is taking extended leave under the Family and Medical Leave Act (FMLA) for your own or for a loved one’s medical condition. Other common protected activities include opposing unlawful discrimination; filing a safety complaint; filing a workers’ compensation complaint; complaining of pay practices; or complaining about other illegal activities. If you are a government employee, you might also have some claims based on constitutional law.