Deprecated function: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in general_entity_view() (line 127 of modules/custom/general/general.module).
Warning: Undefined array key "HTTP_USER_AGENT" in acas_preprocess_html() (line 390 of themes/custom/acas/acas.theme).
Deprecated function: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in acas_preprocess_html() (line 390 of themes/custom/acas/acas.theme).
How to change the terms of an employment contract. This is sometimes called 'varying a contract'.