If you were overtime eligible, then even as a salaried employee, you should have received overtime when working excess hours (e.g. over 40 hours in a week): this generally an amount equal to 1/2 times your effective or equivalent hourly rate, for each overtime hour. For example: say you earned $52k per year, or $1k/week, which is equivalent to $25/hour. For each overtime hour, you'd get an additional $12.50, and you can sue for back overtime, if eligible, for up to the last 2 years from the date you institute your legal action. Salaried employees *can* get overtime so long as they do not meet one or more of the criteria (e.g. the administrative employee exemption, the professional exemption) to be exempt.Note that engineers generally are exempt from overtime as professional employees, so you may be mistaken about your eligibility.You cannot recover for PTSD for a stressful workplace or long hours: American law does not in any guaranty a non-stressful job and does not limit hours worked, and since your employer had no obligation to not put you under stress or to not work you long hours, you have no claim for compensation.