Only Owners/Partners of the firm should seal drawings or reports. Employees should NEVER seal documents for the firm. The person that seals documents is the one that stands behind the document and would be liable if something goes wrong. That person must be one of the Owners of the firm. An employee does not sign the contract for the work, does not share in profit, does not get credit if things go well, so it would be a mistake for an employee to assume any liability for action of the firm.