1. Does the doctrine of res judicata bar a Title VII retaliation claim based on post-employment conduct when the prior lawsuit addressed only pre-termination conduct, particularly when the subsequent claims were not ripe during the prior litigation?

2. Is a plaintiff required to amend an initial EEOC charge to include distinct acts of post-employment retaliation, or may they file a separate EEOC charge without violating Title VII's administrative exhaustion requirements?

3. Does the 300-day limitations period for filing an EEOC charge for a retaliatory lawsuit commence with a threat of litigation or with the actual filing of the lawsuit?

Does the doctrine of res judicata bar a Title VII retaliation claim based on post-employment conduct when the prior lawsuit addressed only pre-termination conduct, and does the 300-day limitations period commence with a threat of litigation or actual lawsuit filing?