Syfte: Syftet med studien är att på den svenska marknaden undersöka om mängden miljöinformation i företags hållbarhetsrapporter påverkas av deras storlek samt miljöprestanda. Metod: För att kunna besvara de framtagna hypoteserna i denna studie har hållbarhetsrapportens omfattning av miljöinformation studerats utifrån en innehållsanalys baserad på GRI:s riktlinjer G4. Storleken har beräknats utifrån nettoomsättningen och miljöprestandan utifrån mängden koldioxidutsläpp. Dessa variabler har sedan undersökts i en multipel regressionsanalys med kontroll för företagens bransch. Resultat och slutsats: Resultatet i studien visar likt tidigare forskning att det finns ett positivt signifikant samband mellan företagens omfattning av miljöinformation och deras miljöprestanda. Detta förklaras bland annat med hjälp av intressent- och legitimitetsteorin. Studiens andra resultat mellan företagens storlek och deras omfattning av miljöinformation visar däremot ett icke statistiskt signifikant samband, till skillnad från majoriteten av tidigare studier. Förslag till fortsatt forskning: Förslag till fortsatt forskning inom området är att genomföra en undersökning baserad på ett mer omfattande mått på miljöprestandan. Detta genom att utföra en kvalitativ studie innehållandes intervjuer. Vidare vore det intressant med ett större urval, då vi i denna studie enbart har studerat ett litet urval på grund av tidsbegränsning. Ytterligare ett förslag är att i framtiden göra en studie som undersöker hur rapporteringen av CSR har förändrats över tiden. Det vill säga om miljöinformationen har ökat eller om utsläppen har reducerats. Uppsatsens bidrag: Studien lämnar ett teoretiskt bidrag till forskningen på den svenska marknaden, då den har fyllt det forskningsgap som tidigare existerade. Studien har även tillfört ett praktiskt bidrag genom att bland annat ge allmänheten en insikt om hur företag väljer att rapportera om miljön i deras hållbarhetsrapporter. / Aim:The purpose of this study is to investigate whether Swedish company's extentof environmental information in the sustainability report is affected by their size and environmental performance.Method:In this study, a quantitativeresearch methodand a deductive approachis applied. To answer the purpose of thisstudy a content analysis based on theGRI Guideline has been performed. This is done to study the company's extentof environmental information. The firms sizewas calculated based on net sales and environmental performance based on the amount of carbon dioxide emissions. These variables werethen examined in amultiple regression analysiswith aspects taken each company’s line of business. This allows the study’s two hypotheses to be answered.ResultsandConclusions:The results show similar results from previous research, that there is a positive significant relationship between a company's extent of environmental information and their environmental performance. This is partly explained by the stakeholder and legitimacy theory. The study's other findings between company size and the extentof environmental information show however a non-statistically significant association, which is the opposite of the majority of previous studies. Suggestions for future research: Suggestions for further research in this area is to investigatea survey based on a more comprehensive measure of environmental performance. This is by conducting a qualitative study consisting of interviews. Furthermore, it would be interesting to investigate a larger sample, since we in this study only examinea small sample because of time constraints. A further proposal is to conduct a study investigating how the reporting of CSR has been affected over time. That is, if the environmental information has increased or if the emissions have been reduced.Contribution of the thesis: The study makes a theoretical contribution to research on the Swedish market, as it has filled the research gap previously existed. The study also has provided a practical contribution,which inter alia provides the public with an insight on how companies choose to report on their sustainability report.

Reporting of sustainability has gained an increasing importance over the past years and companies have begun to take greater responsibility for society. One major reason why sustainability has been recognized is because of the increased climate change in the world. The airline industry, which is seen as an important part of today's tourism, have had a major impact on the social, economic and natural surroundings, which is an contributing factor to today's climate change and air pollution. Airlines can be divided into two categories, low-cost airlines and traditional airlines. These two airlines separates each other by their business ideas and strategies, where low-cost airlines target price-sensitive travelers while traditional airlines are known to have a larger price advantage over the low-cost airlines. Different strategies can lead to separation of the sustainability reports, as companies work in different ways, which has consequences for how they report their sustainability. This is a problem as companies take different social responsibilities. The purpose of this study is to describe and analyze how sustainability reporting differs between airlines that use different business strategies, by comparing two low-cost airlines with two traditional airlines. The authors first examined already existing theory that has been collected and compared to the companies' sustainability reports. The conclusions of this study have shown big differences between low-cost airlines and traditional airlines reporting of sustainability. An important reason for this is based on the airlines' strategies, where the low-cost airlines apply a low-cost strategy and try to gain competitive advantages by having the industry's lowest costs, while the traditional airlines have a strategy to make the flight as comfortable as possible for the travelers, where high quality and service is important priorities for creating customer satisfaction. The different strategies between the airlines mean that they prioritize different things, which are reflected in their sustainability reports. All airlines have shown clear initiatives to achieve a more sustainable world, but in this study, the traditional airlines have always done a little extra in all the three perspectives.