Can the company of the lending agency harass you on your job for payment and you are only one day late to pay your payment?

I dont think so but heres a suggestion pay the bill and they should leave you alone. NO!!!Look up the Fair Debt Collection act it is online. Harassment has many different definitions to many different people.

If you are asking can a lender call you at work and ask you for payment if you are late regardless of the amount of time you are late, then yes, they can.

If you are asking can they call you repeatedly and call you derogatory names, and notify your coworkers you are delinquently in debt, then, no, they cannot. the former is NOT harassment, the later is.