Typically, contractors are not authorized to commit anything on behalf of the company to the company's customers. Most companies have pretty tight policies to this affect. The only two exceptions are 1. If the contractor is filling in for a senior leader of the company and has been explicitly authorized by the company's senior leadership 2. The commitment is about the work directly done by the contractor (or severely impacts contractor’s work) There are a few things you could do from an HR/Legal/corporate perspective to ensure you (read your company) would not be in such a situation. 1. If your company does not already have such aforesaid policies in place, contact your legal department put such procedures in place. 2. Have the contractors (and the companies they represent) sign agreements specific to the contractor's authority 3. Define a role-based authorization matrix and clearly establish with your clients as to who is authorized to make commitments on company’s behalf While the above could take some time, to do some immediate damage control, send out a general memo to your clients that states something like "Please note that starting <date>, any and all commitments on behalf of <company name> must be authorized by a full time employee of <company name> at the <position name> level or above. We regret to inform you that we are not in a position to honor any commitments made by anyone other than the authorized personnel of <company name>, including contractors hired by <company name>". I would request the corporate legal affairs department to vet the memo before sending it to the clients as well (just be on the safe side). Thanks, --Som G