One of the most important tests used by the Fair Work Commission when determining whether a termination of employment constitutes an unfair dismissal is whether the dismissal was “harsh, unjust or unreasonable”. It is important to note that the tests are disjunctive thus;

“[95] In an Appeal by B, C and D,66 a Full Bench of the Commission discussed the phrase

“harsh, unjust or unreasonable”. The Full Bench held at [53]:

A determination as to whether a dismissal was harsh, unjust or unreasonable involves

the application of a broad discretionary standard. The discretion is nevertheless one

that must be exercised judicially, that is, in accordance with applicable legal

principles…The classic statement of principle comes from the judgement of McHugh

and Gummow JJ in Byrne v Australian Airlines Ltd (1995) 185 CLR 410 at 465:

“It may be that the termination is harsh but not unjust or unreasonable, unjust

but not harsh or unreasonable, or unreasonable but not harsh or unjust. In many

cases the concepts will overlap. Thus, the one termination of employment may

be unjust because the employee was not guilty of the misconduct on which the

employer acted, may be unreasonable because it was decided upon inferences

which could not reasonably have been drawn from the material before the

employer, and may be harsh in its consequences for the personal and economic

situation of the employee or because it is disproportionate to the gravity of the

misconduct in respect of which the employer acted.”

[96] The Full Bench continued at [57]:

In Byrne v Australian Airlines (1995) 185 CLR 410 at 467 McHugh and Gummow JJ

endorsed the observations of Sheppard and Heerey JJ in Bostik (Aust) Pty Ltd v

Gorgevski (No 1) [1992] FCA 209; (1992) 36 FCR 20 at 28 in relation to the phrase

“harsh, unjust or unreasonable”:

“These are ordinary non-technical words which are intended to apply to an

infinite variety of situations where employment is terminated. We do not think

any redefinition or paraphrase of the expression is desirable. We agree with the

learned trial judge’s view that a court must decide whether the decision of the

employer to dismiss was, viewed objectively, harsh, unjust or unreasonable.

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Relevant to this are the circumstances which led to the decision to dismiss and

also the effect of that decision on the employer. Any harsh effect on the individual

employee is clearly relevant but of course not conclusive. Other matters have to

be considered such as the gravity of the employee’s misconduct.”

[97] Each of the matters in section 387 of the FW Act must be considered and treated as a

matter of significance in the decision making process.67 However, the Commission is only

required to consider those matters insofar as they are relevant to the factual circumstances of

the particular case.68 The weight given to each such relevant matter is a matter for the

Commission in coming to an overall conclusion as to whether the dismissal was harsh, unjust

or unreasonable.69

[98] The matters set out in section 387 of the FW Act are considered below.

Whether there was a valid reason for the dismissal related to Ms Foster’s capacity or

conduct (including its effect on the safety and welfare of other employees): Section

387(a)

[99] A Full Bench of the Commission in Sydney Trains v Gary Hilder70 explained that the

principles applicable to the consideration required under section 387(a) were well established

and reiterated those principles. The reiteration of those principles is reproduced below:

(1) A valid reason is one which is sound, defensible and well-founded, and not fanciful,

spiteful or prejudiced.

(2) When the reason for termination is based on the misconduct of the employee the

Commission must, if it is in issue in the proceedings, determine whether the conduct

occurred and what it involved.

(3) A reason would be valid because the conduct occurred and it justified termination.

There would not be a valid reason for termination because the conduct did not occur or

it did occur but did not justify termination (because, for example, it involved a trivial

misdemeanour).

(4) For the purposes of s 387(a) it is not necessary to demonstrate misconduct

sufficiently serious to justify summary dismissal on the part of the employee in order to

demonstrate that there was a valid reason for the employee’s dismissal (although

established misconduct of this nature would undoubtedly be sufficient to constitute a

valid reason).

(5) Whether an employee’s conduct amounted to misconduct serious enough to give rise

to the right to summary dismissal under the terms of the employee’s contract of

employment is not relevant to the determination of whether there was a valid reason for

dismissal pursuant to s 387(a).

(6) The existence of a valid reason to dismiss is not assessed by reference to a legal

right to terminate a contract of employment.

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(7) The criterion for a valid reason is not whether serious misconduct as defined in reg

1.07 has occurred, since reg 1.07 has no application to s 387(a).

(8) An assessment of the degree of seriousness of misconduct which is found to constitute

a valid reason for dismissal for the purposes of s 387(a) will be a relevant matter under

s 387(h). In that context the issue is whether dismissal was a proportionate response to

the conduct in question.

(9) Matters raised in mitigation of misconduct which has been found to have occurred

are not to be brought into account in relation to the specific consideration of valid

reason under s 387(a) but rather under s 387(h) as part of the overall consideration of

whether the dismissal is harsh, unjust or unreasonable.

[100] I apply those principles in taking into account section 387(a) of the FW Act

 Ms Jennifer Foster v MSWA Limited -[2026] FWC 1917 per Walkaden C delivered 11 June 2026