Labour markets can be just and unjust in many ways that go beyond the distribution of income. One is luck and predictability. Their distribution is highly unequally, and I think that this raises issues of justice.
First, take individual predictability. In order to plan your life (where you want to live, with whom, whether/when to have children etc.) it is helpful to know what kind of job you can expect to have over the next few years. If job markets are to a high degree based on luck, rather than other criteria such as merit or age, they are less predictable. Now, whether or not labour markets could or should be structured around merit (and in what sense of merit) is a controversial question. But one advantage is that you can have a reasonable guess, based on your prior achievements, of what your job prospects for the next few years will be. Psychological tendencies such as over-optimism or cognitive dissonance can of course kick in, but even more so if there is less predictability.
Second, collective predictability. There are factors in the legal and social set-up of labour markets that determine, for societies as a whole, how predictable labour markets are. For example, a government can take anti-cyclical measures in a depression that keep people in jobs. Or, as Albena Azmanova has recently pointed out, the welfare state can be designed in ways that increase or decrease individuals’ flexibility, maybe offering “universal minimal employment” as a fallback option.
My impression is that much goes wrong in these respects today, and that this raises issues of justice (in addition to many other forms of injustice in labour markets).
First, unpredictability gives greater power to employers, because employees will reasonably be more risk averse, and will try to keep jobs they have, even if the conditions are such that they would otherwise want to quit. This looks like an issue of justice as such, and it can have harmful consequences if it prevents people from standing up to injustices within their job, blow the whistle, etc. Secondly, and more importantly, issues of unpredictability hit different groups in society with differential force. Depending on whether you have inherited wealth or not, marketable or less marketable human capital, a family rooted in one place or full geographic flexibility, etc., unpredictable labour markets make your life more or less difficult to live.
Nonetheless, it would not be worth raising these issues as issues of justice if they could not be changed, or only at the cost of violating other values. In designing policy instruments that make job markets more predictable, one would have to be careful – otherwise one might end up, for example, with an in-group with 100% predictability and an out-group with 0% predictability. Or one might, in the long run, stifle markets so much that the economic wellbeing of the worst off is endangered. But it seems worth experimenting with different models, and learning from the experiences in other countries, in order to see what can be done (maybe we can discuss examples below). And I think there can also be cases micro-injustices about predictability, for example if a boss tells three people that they have “good chances” to be promoted, while only one can really be promoted.
One thing, however, can and should change, in my view. The role of luck in the job market should be acknowledged, and professional success (or the lack of it) should not be seen as a sign of personal worthiness (or the lack of it). We are equal as human beings and as citizens, and while some may work harder than others, or be more talented than others, these things do not determine our value. So while there might be arguments in favour of de facto trying to tie job market structures more to achievement, for the sake of predictability (although I think that collective measures are far more important), we should stop fetishizing professional success. The role of luck is always going to be there, and acknowledging it might lead to a bit more solidarity among co-citizens and fellow human beings.