system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are employees expected to give a two week notice prior to leaving their job, whereas employers are able to terminate employees without notice?
gpt
Future employers are more likely to consider the bad feelings of a previous employer when considering a hiring decision rather than prospective employees being warned off by previous employees let go without notice. Power is not balanced in the relationship between employers and employees.

The two weeks is purely customary.