After section 111 of the Employment Rights Act 1996 insert—
(1)Evidence of pre-termination negotiations is inadmissible in any proceedings on a complaint under section 111.
This is subject to subsections (3) to (5).
(2)In subsection (1) “pre-termination negotiations” means any offer made or discussions held, before the termination of the employment in question, with a view to it being terminated on terms agreed between the employer and the employee.
(3)Subsection (1) does not apply where, according to the complainant’s case, the circumstances are such that a provision (whenever made) contained in, or made under, this or any other Act requires the complainant to be regarded for the purposes of this Part as unfairly dismissed.
(4)In relation to anything said or done which in the tribunal’s opinion was improper, or was connected with improper behaviour, subsection (1) applies only to the extent that the tribunal considers just.
(5)Subsection (1) does not affect the admissibility, on any question as to costs or expenses, of evidence relating to an offer made on the basis that the right to refer to it on any such question is reserved.”