> The biggest salary negotiation mistake I see is when people assume the negotiation is of the first type (one-off, never see people again) instead of the latte

> The biggest salary negotiation mistake I see is when people assume the negotiation is of the first type (one-off, never see people again) instead of the latter type (part of an ongoing relationship). That depends what you're negotiating. As a counterexample, if you negotiate a big raise upfront for your promotion and then "coast" for 5-10 years, you're still better off than negotiating a series of smaller raises every 2 years, because you forego the overhead of multiple negotiations. Personally, I'd rather just focus on the work. Negotiation is costly if you're not good at it. It's easier to justify your value once, than multiple times. Due to anchoring, and people getting used to the increased output you bring, it will become harder and harder to negotiate as you go further. Better to do it once, but do it right.