If you get a job elsewhere quit Imperial right way. Don’t wait for severance package. This place is toxic and k–ler for last one year. If you think you are ok to work with 3 persons work load by getting 5 to 10 % more salary at Imperial, you can stay here. However, you might loose your job any time as their policy is send all work to cheap overseas locations. Doesn’t matter what the oil price is. Supervisors / Managers target is to make more money for themselves ( stock, salary, bonus) as they can. They also know they will be fired within a matter of time. They are here only to increase their savings. No long term goal for anyone. Bad for peoples close to retirement (less than 5 yrs). They will ruin their health only to keep this job.
An excellent point by @ftv+19zsvHIE.